Tag: Arizona

  • Storm Updates: Southwest Moderate Flood — Nov 1

    Storm Updates: Southwest Moderate Flood — Nov 1

    Tropical: None · Severe: Slight · Flood: Moderate

    What Changed

    • Compared with the October 31 afternoon pulse (quiet-pulse-2026-10-31-afternoon: Tropical: None · Severe: None · Flood: Slight): SPC Day 1 Convective Outlook (latest 0100 UTC November 2 / 6:41 PM CST November 1, 2026, valid 020100Z–021200Z) has opened a Slight Risk of severe thunderstorms across parts of New Mexico into the Texas and Oklahoma Panhandles. Threat of severe wind gusts and a few tornadoes this evening into the overnight. Active Severe Thunderstorm Warnings already issued for portions of central New Mexico including the Albuquerque area.
    • WPC Day 1 Excessive Rainfall Outlook (discussion 733 PM EST November 1, valid 01Z November 2–12Z November 2) holds a Moderate Risk of excessive rainfall for portions of the Four Corners region, including high-end Moderate across the Mogollon Rim and San Juan Mountains, with widespread Moderate through canyon areas of northwest Arizona into southwestern Utah. Upgrade from the prior Slight. Atmospheric river / pineapple express on saturated soils. Active Flash Flood Warnings across Arizona (Tucson, Flagstaff, Paria River, etc.).
    • Tropical lane remains None. National Hurricane Center Tropical Weather Outlook (700 PM EST November 1) states tropical cyclone formation is not expected during the next 7 days. No named tropical cyclones. No tropical storm or hurricane watch or warning on the U.S. coast or Gulf of America.
    • Flood Watches remain widespread across Arizona, portions of Utah, Colorado, New Mexico, Nevada, and Florida (Treasure Coast / Palm Beaches). Residual river and flash flooding impacts continue on already saturated Southwest soils from recent multi-week wet pattern.
    • Severe lane opened to Slight and Flood upgraded to Moderate. Dominant ticket is the Moderate excessive rainfall and live flash flooding across the Four Corners / Arizona. Severe wind and tornado potential secondary but live in New Mexico this evening.

    Live Status

    As of the afternoon desk on Sunday, November 1, 2026 (approximately 7:14 PM PDT / 03:14 UTC November 2), the national picture centers on the Southwest. The Storm Prediction Center’s latest Day 1 Convective Outlook confirms a Slight Risk of severe thunderstorms from New Mexico into the southern and central High Plains. Thunderstorms capable of producing severe wind gusts and a few tornadoes are expected this evening into the overnight from parts of New Mexico into the Texas and Oklahoma Panhandles. Water vapor shows a mid-level trough with strong southwesterly flow; storms developing in higher terrain of north-central New Mexico and a line expected to organize and move east-northeastward. Surface dewpoints into the lower to mid 60s F support moderate instability. 0-3 km storm-relative helicity near 350 m²/s² supports tornado potential with embedded supercells. Faster bowing segments may produce gusts above 70 mph. Mesoscale Discussion 2424 noted. No watches currently listed as valid in the latest public products reviewed, but warnings are live.

    The Weather Prediction Center maintains a Moderate Risk of excessive rainfall for portions of the Four Corners. An anomalously strong atmospheric river is driving highly anomalous moisture (PWATs 4-6 sigma above normal) into the Southwest on already saturated soils from a multi-week wet period. High-end Moderate across the Mogollon Rim and San Juan Mountains; widespread Moderate into canyon areas of northwest Arizona into southwestern Utah. Neighborhood probabilities for locally 5 inches or greater remain elevated. Dry washes, arroyos, slot canyons, and burn scars are most susceptible. Flash Flood Warnings active and extended in multiple Arizona counties, including life-threatening flooding on the Paria River and urban/stream flooding near Tucson and Flagstaff. Flood Watches cover large portions of Arizona and adjacent states through early Monday.

    Hotspots

    Four Corners / central and northern Arizona (flood primary): Moderate Risk excessive rainfall with active Flash Flood Warnings. Atmospheric river producing heavy rain rates on saturated ground. Impacts to creeks, washes, urban areas, and low-water crossings. Evacuations reported in areas such as Sedona / Oak Creek. Restoration exposure is water extraction, drying, and infrastructure from runoff.

    New Mexico into Texas and Oklahoma Panhandles (severe): Slight Risk for severe wind and isolated tornadoes this evening through overnight. Line of storms organizing and moving east-northeast. Active Severe Thunderstorm Warnings already covering Albuquerque metro and surrounding counties with 60 mph gust potential. Possible 70+ mph gusts and line-embedded tornadoes farther east.

    East-central Florida (residual flood): Flood Watch in effect for Treasure Coast and Palm Beach County through Monday afternoon. Widespread 1-3 inches possible, isolated 5-7 inches where bands train. Saturated soils from recent rain. Slight Risk residual on WPC for portions of the Florida Peninsula.

    Just-Hit

    Multiple Flash Flood Warnings active or recently extended across Arizona (Tucson area, Flagstaff / Paria River, Graham/Greenlee, etc.) with radar and gauge indications of 1-2 inches already fallen and additional runoff on saturated soils. Severe Thunderstorm Warning issued for Bernalillo, Santa Fe, and adjacent counties in central New Mexico with 60 mph wind gusts indicated by radar. Residual Flood Warnings and watches from prior rainfall continue in the Southwest. Florida coastal and inland flood concerns building with the ongoing disturbance.

    Pulse Table

    LaneStatusNotes (as of ~7:14 PM PDT / 03:14 UTC Nov 2 2026)
    TropicalNoneNo tropical cyclones in the Atlantic, Caribbean, or Gulf. NHC: formation not expected next 7 days. No U.S. coastal or Gulf watches or warnings.
    SevereSlightSPC Day 1 Slight Risk New Mexico into TX/OK Panhandles. Severe wind gusts and few tornadoes expected evening into overnight. Active SVR warnings in NM. No watches listed in latest products reviewed.
    FloodModerateWPC Day 1 ERO Moderate Risk Four Corners (Mogollon Rim, San Juans, NW AZ into SW UT). Active FFWs in AZ. Flood Watches widespread Southwest and FL. Atmospheric river on saturated soils.

    Restoration Read

    Primary ticket is water across Arizona and the Four Corners. Stage for flash flooding, stream rises, and urban ponding on already wet ground. Secondary is wind damage (roofs, siding, trees, power) from the New Mexico severe line this evening into the Panhandles overnight. No tropical restoration file. Florida residual water possible but lower priority than the Southwest Moderate.

    What This Is Not

    Not a named tropical cyclone landfall or coastal surge event. Not an Enhanced or higher severe risk. Not a High excessive rainfall risk (Moderate is the top open lane). Not a quiet day.

    Looking Ahead One Day

    SPC Day 2 outlook shows no severe risk areas for Monday. WPC Day 2 holds a Slight Risk of excessive rainfall for the east coast of Florida. Southwest flood threat should wind down as the atmospheric river shifts, but residual sensitivity remains on saturated soils. Monitor local NWS for lingering warnings.

    Rising Queries

    flood watch, flash flood warning, atmospheric river Arizona, Four Corners flooding, New Mexico thunderstorms.

    Sources

    Official products: Storm Prediction Center (Day 1 Outlook 0100Z November 2), Weather Prediction Center (Day 1 Excessive Rainfall Outlook and discussion 733 PM EST November 1), National Weather Service (watches, warnings, and advisories), National Hurricane Center (Atlantic quiet). Previous desk: quiet-pulse-2026-10-31-afternoon. No morning desk published for November 1.

    Disclaimer: This is a summary of official public products from the Storm Prediction Center, Weather Prediction Center, National Weather Service, and National Hurricane Center. Always consult the latest official forecasts and warnings for your location. This desk does not issue warnings. Turn around, don’t drown.

  • Storm Updates: Southwest Flood & NM Severe — Nov 1

    Storm Updates: Southwest Flood & NM Severe — Nov 1

    As of the afternoon desk on Sunday, November 1, 2026 (approximately 8:16 PM PDT / 04:16 UTC November 2), the national picture centers on the Southwest. The Storm Prediction Center’s latest Day 1 Convective Outlook (0100 UTC update issued 0641 PM CST November 1, valid 020100Z–021200Z) carries a Slight Risk of severe thunderstorms across parts of New Mexico into the Texas and Oklahoma Panhandles. The Weather Prediction Center Day 1 Excessive Rainfall Outlook (issued 0027Z November 2, valid 0100Z–1200Z November 2) maintains a Moderate Risk of excessive rainfall for portions of the Four Corners region. No tropical storm or hurricane watch or warning is in effect on the U.S. coast or Gulf of America.

    Tropical: None · Severe: Slight · Flood: Moderate

    What Changed

    • Compared with this morning’s pulse table (quiet-pulse-2026-11-01-morning: Tropical: None · Severe: Slight · Flood: Moderate): SPC Day 1 (0100 UTC November 2 cycle) holds the Slight Risk. Storms have developed in north-central New Mexico and are organizing into a line expected to move east-northeast into the Panhandles this evening into overnight, with severe wind gusts and a few tornadoes possible. Severe Thunderstorm Watch 699 remains in effect for portions of New Mexico.
    • WPC Day 1 ERO continues the Moderate Risk covering approximately 64,281 square miles and 3.7 million people on already saturated soils. Multiple Flash Flood Warnings remain active across Arizona.
    • Active Severe Thunderstorm Warnings have been issued for portions of central New Mexico, including the Albuquerque metro area. Mesoscale Discussion 2424 addresses severe potential with a watch likely in the High Plains corridor.
    • Tropical lane remains None. National Hurricane Center confirms no tropical cyclones and formation is not expected during the next 7 days. No U.S. coastal or Gulf watches or warnings.
    • Risk levels unchanged from morning, but the severe threat is now actively unfolding. Dominant restoration ticket remains the Moderate excessive rainfall and flash flooding on saturated soils across the Southwest, compounded by the active severe wind and tornado threat in New Mexico and the Panhandles.

    Live Status

    SPC Day 1 lists a Slight Risk of severe thunderstorms across parts of New Mexico into the Texas and Oklahoma Panhandles (area approximately 61,898 square miles, population approximately 673,000). Thunderstorms capable of producing severe wind gusts and a few tornadoes are expected this evening into the overnight. Storms have developed in the higher terrain of north-central New Mexico and will move east-northeastward. A band of strong storms is expected over central New Mexico, organizing into a line moving into the Texas Panhandle. Faster bowing segments may produce gusts above 70 mph. Supercells possible within the line; Amarillo VWP shows 0-3 km storm-relative helicity near 350 m²/s², supporting tornado potential (see MCD 2424). The threat is expected to persist into the overnight into northwestern Oklahoma and south-central Kansas with isolated severe gusts.

    WPC Day 1 ERO places a Moderate Risk of excessive rainfall covering 64,281 square miles and 3,656,961 people. A high-end Moderate remains in effect for portions of the Mogollon Rim and San Juan Mountains. An anomalously strong atmospheric river is driving highly anomalous moisture into the Southwest on already saturated soils. Widespread 3-5 inches of rain are expected in core areas, with efficient runoff converting nearly all rainfall to flooding of dry washes, arroyos, slot canyons, and burn scars. Flood Watches remain widespread. Active Flash Flood Warnings continue in Arizona, including the Paria River in Coconino County (considerable threat) and the Tucson metro area.

    Hotspots

    • Southwest / Four Corners (Arizona, New Mexico, southern Utah, southwestern Colorado): Primary focus under WPC Moderate Risk. Saturated soils from multi-week wet period. Active Flash Flood Warnings in northern and southeastern Arizona (Paria River/Lees Ferry with rapid rise reported, Tucson area, Graham and Greenlee counties). Expect life-threatening flash flooding of dry washes, arroyos, slot canyons, urban areas, and burn scars. Heavy rain rates capable of producing considerable impacts in core areas of the Mogollon Rim and San Juans.
    • Southern High Plains / eastern New Mexico into Texas and Oklahoma Panhandles: SPC Slight Risk. Severe Thunderstorm Watch 699 active for New Mexico. Line of storms developing across central and eastern New Mexico, moving east-northeast into the Panhandles overnight. Primary threats: damaging wind gusts (isolated above 70 mph possible) and a few line-embedded tornadoes. Active Severe Thunderstorm Warnings already issued for central New Mexico including Albuquerque metro.
    • East coast of Florida: Residual Slight Risk of excessive rainfall. Flood Watch in effect for parts of the Treasure Coast and Palm Beach County through Monday afternoon. Additional rain continues into Monday on saturated soils. No organized severe threat.

    Just-Hit

    Heavy rainfall from the atmospheric river continued into Sunday afternoon and evening, producing and extending Flash Flood Warnings across Arizona, including a rapid rise on the Paria River and persistent threats in the Tucson area. Severe thunderstorms developed in central New Mexico by late afternoon, prompting Severe Thunderstorm Warnings for the Albuquerque metro and surrounding counties with radar-indicated 60 mph wind gusts. Preliminary local storm reports include 60 mph gusts in Clark County, Nevada, earlier in the convective day. No widespread tornado reports logged yet, but the threat is increasing as the line organizes and moves east.

    Pulse Table

    LaneStatusNotes (as of ~8:16 PM PDT / 04:16 UTC Nov 2 2026)
    TropicalNoneNo tropical cyclones in the Atlantic, Caribbean, or Gulf. NHC: formation not expected next 7 days. No U.S. coastal or Gulf watches or warnings.
    SevereSlightSPC Day 1 (0100Z Nov 2): SLIGHT RISK NM into TX/OK Panhandles. Severe Thunderstorm Watch 699 active for NM. Damaging winds primary, few tornadoes possible with line. Storms developing; MCD 2424.
    FloodModerateWPC Day 1 ERO Moderate Risk Four Corners (~64k sq mi, ~3.7M people). Active Flash Flood Warnings AZ. Flood Watches AZ/NM/UT/CO and residual FL. Saturated soils from recent events.

    Restoration Read

    Moderate flood lane remains the primary driver on already saturated soils across the Southwest and Four Corners. Expect flash flooding of washes, arroyos, slot canyons, urban corridors, and burn scars, with potential for considerable impacts in core areas of the Mogollon Rim. Active severe threat in New Mexico and the High Plains brings risk of damaging winds (isolated 70+ mph) and a few tornadoes with the evening and overnight line of storms. Florida residual flash flood risk under Slight ERO. Monitor for water intrusion, debris, high water on roads, roof/siding/tree damage from winds, and residual coastal flooding. Turn around, don’t drown. No tropical component.

    What This Is Not

    This is not a Quiet Pulse. SPC Slight Risk and WPC Moderate Risk are both open. No tropical storm or hurricane watch or warning on the U.S. coast or Gulf of America. This desk summarizes public products from the SPC, WPC, NWS, and NHC. It is not an official warning.

    Looking Ahead One Day

    Monday: SPC Day 2 outlook shows a Slight Risk shifting eastward across North Texas, Oklahoma, Kansas, and into Missouri for late Monday afternoon into evening, with damaging winds and a few tornadoes. WPC Day 2 holds residual Slight Risk of excessive rainfall for parts of the east coast of Florida. Southwest flood threat begins to wind down as the moisture plume moves through, but residual runoff on saturated soils continues into Monday. No tropical development expected.

    Rising Queries

    Rising queries tied to the Southwest flood and New Mexico severe hotspot include “flood watch,” “flash flood warning,” and related searches for Arizona and New Mexico flooding.

    Sources

    Disclaimer: Informational only — not an official warning. This is a summary of official public products from the Storm Prediction Center, Weather Prediction Center, National Weather Service, and National Hurricane Center. Always consult the latest official forecasts and warnings for your location. Turn around, don’t drown.

  • Storm Updates: High Plains Severe — Nov 01 Morning

    Storm Updates: High Plains Severe — Nov 01 Morning

    As of the morning desk on Sunday, November 1, 2026 (approximately 8:15 PM PST / 04:15 UTC November 2), the national picture has both severe and flood lanes open. The Storm Prediction Center’s latest Day 1 Convective Outlook (0100 UTC update issued 0641 PM CST November 1, valid 020100Z–021200Z) states: “THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF NEW MEXICO INTO THE TEXAS AND OKLAHOMA PANHANDLES.” The Weather Prediction Center Day 1 Excessive Rainfall Outlook (issued 0027Z November 2, valid 0100Z–1200Z November 2) places a Moderate Risk of excessive rainfall for portions of the Southwest. No tropical storm or hurricane watch or warning is in effect on the U.S. coast or Gulf of America.

    Tropical: None · Severe: Slight · Flood: Moderate

    What Changed

    • Compared with the earlier morning desk pulse table (this slug, prior version ~6:14 PM PST): SPC Day 1 has been updated to the 0100 UTC November 2 cycle. Slight Risk remains in place across parts of New Mexico into the Texas and Oklahoma Panhandles. Thunderstorms have developed in the higher terrain of north-central New Mexico and are expected to organize into a line moving east-northeast into the Panhandles this evening into overnight, with severe wind gusts and a few tornadoes possible. Severe Thunderstorm Watch 699 remains in effect until 0400 UTC November 2 for portions of New Mexico.
    • WPC Day 1 ERO continues a Moderate Risk, now valid 0100Z–1200Z November 2, covering ~64,000 square miles and ~3.7 million people. Flood Watches and multiple Flash Flood Warnings remain active across Arizona, New Mexico, and surrounding areas on saturated soils.
    • Tropical lane remains None. National Hurricane Center Tropical Weather Outlook confirms tropical cyclone formation is not expected during the next 7 days. No named cyclone threatens or has just hit the U.S. coast or Gulf.
    • NWS products show ongoing Severe Thunderstorm Warnings in central New Mexico (including Albuquerque metro), Flash Flood Warnings in Arizona (Paria River, Tucson area, Graham/Greenlee), High Wind Warnings in New Mexico and Texas, and Tornado Watches noted in local reports for parts of the South Plains/Texas Panhandle.
    • No major shift in overall risk levels since the prior update this morning, but the severe threat is now actively unfolding with storms moving into the Slight Risk area. Dominant restoration ticket remains the Moderate excessive rainfall and flash flooding on saturated soils across the Southwest, compounded by the active severe wind/tornado threat in New Mexico and the Panhandles.

    Live Status

    SPC Day 1 (0100 UTC November 2, 2026 / 0641 PM CST November 1) lists a Slight Risk of severe thunderstorms across parts of New Mexico into the Texas and Oklahoma Panhandles (area ~61,900 sq mi, population ~673,000). Thunderstorms capable of producing severe wind gusts and a few tornadoes are expected this evening into the overnight from parts of New Mexico into the southern and central High Plains. Ahead of a lead shortwave, storms have developed in north-central New Mexico and will move east-northeast with potential for severe wind gusts. Further east, a band of strong storms is expected over central New Mexico, organizing into a line moving into the Texas Panhandle. Faster bowing segments may produce gusts above 70 mph. Supercells possible within the line; Amarillo VWP shows 0-3 km SRH near 350 m²/s², supporting tornado potential (see MCD 2424). Threat persists into overnight into northwestern Oklahoma and south-central Kansas with isolated severe gusts.

    WPC Day 1 ERO (valid 0100Z Mon Nov 02 through 1200Z Mon Nov 02, issued 0027Z) places a Moderate Risk of excessive rainfall (at least 40% probability) covering 64,281 square miles and 3,656,961 people. Slight Risk covers larger areas. Primary focus remains the Southwest/Four Corners on already saturated soils from recent heavy rainfall. Active Flash Flood Warnings continue in Arizona, including extensions for the Paria River and Tucson metro areas. Flood Watches remain widespread across Arizona, New Mexico, Colorado, Utah, and parts of California, Nevada, and Florida.

    Hotspots

    • Southwest / Four Corners and Southern High Plains (AZ, NM, TX Panhandle, OK Panhandle): Primary focus under WPC Moderate Risk and SPC Slight Risk. Severe Thunderstorm Watch 699 active for New Mexico until 0400 UTC. Line of storms developing across central/eastern NM moving into the Panhandles overnight, with damaging winds (isolated 70+ mph) and line-embedded tornadoes possible. Flash Flood Warnings active in northern and southeastern Arizona (Paria River/Lees Ferry, Tucson metro including Pima/Santa Cruz, Graham/Greenlee). Flood Watches cover much of the region. Expect efficient runoff on saturated soils leading to flash flooding of dry washes, arroyos, slot canyons, and burn scars. Heavy rain rates up to 2 inches per hour possible in stronger cells.
    • East coast of Florida: Residual Slight Risk of excessive rainfall. Flood Watch in effect for parts of the Treasure Coast and Palm Beach County through Monday. Soils sensitive from multi-day rainfall. No organized severe threat.
    • Scattered local alerts: High Wind Warning for Sacramento Mountains and other areas in New Mexico/Texas (gusts 65+ mph). Winter Storm Warnings in portions of Colorado and Nevada. Beach Hazards Statements on California coast.

    Just-Hit

    Heavy rainfall from the atmospheric river continued into Sunday afternoon and evening, producing and extending Flash Flood Warnings across Arizona, including rapid rises on the Paria River and persistent threats in the Tucson area on saturated soils. Severe thunderstorms developed in central New Mexico by late afternoon, prompting Severe Thunderstorm Warnings for the Albuquerque metro and surrounding counties with 60 mph wind gusts indicated. No widespread tornado reports logged yet as of the 0100 UTC outlook, but the threat is increasing as the line organizes and moves east into better moisture and shear.

    Pulse Table

    LaneStatusNotes (as of ~8:15 PM PST / 04:15 UTC Nov 2 2026)
    TropicalNoneNo tropical cyclones in the Atlantic. NHC: formation not expected next 7 days. No coastal or Gulf watches or warnings.
    SevereSlightSPC Day 1 (0100Z Nov 2): SLIGHT RISK NM into TX/OK Panhandles. Severe Thunderstorm Watch 699 active for NM until 0400Z Nov 2. Damaging winds primary, few tornadoes possible with line. Storms developing.
    FloodModerateWPC Day 1 ERO Moderate Risk Southwest (~64k sq mi, ~3.7M people). Active Flash Flood Warnings AZ. Flood Watches AZ/NM/UT/CO and others. Saturated soils from recent events.

    Restoration Read

    Moderate flood lane remains the primary driver on already saturated soils across the Southwest. Expect flash flooding of washes, arroyos, slot canyons, urban areas, and burn scars, with potential for considerable impacts in core areas of the Mogollon Rim and surrounding terrain. Active severe threat in New Mexico and the High Plains brings risk of damaging winds (isolated 70+ mph) and a few tornadoes with the evening/overnight line of storms, plus ongoing severe thunderstorm warnings. Florida residual flash flood risk under Slight ERO. Monitor for water intrusion, debris, high water on roads, roof/siding/tree damage from winds, and residual coastal flooding. Turn around, don’t drown. No tropical component.

    What This Is Not

    This is not a Quiet Pulse. SPC Slight Risk and WPC Moderate Risk are both open. No tropical storm or hurricane watch or warning on the U.S. coast or Gulf of America. This desk summarizes public products from the SPC, WPC, NWS, and NHC. It is not an official warning.

    Looking Ahead One Day

    Monday: SPC Day 2 outlook shows a Slight Risk shifting eastward across North Texas, Oklahoma, Kansas, and into Missouri for late Monday afternoon into evening, with damaging winds and a few tornadoes. WPC Day 2 holds residual Slight Risk of excessive rainfall for parts of Florida. Southwest flood threat begins to wind down as the plume moves through, but residual runoff on saturated soils continues into Monday. No tropical development expected.

    Rising Queries

    Trends unreachable.

    Sources

    • SPC Day 1 Convective Outlook (0100 UTC Nov 2 2026 / 0641 PM CST Nov 1): spc.noaa.gov
    • WPC Day 1 Excessive Rainfall Outlook (issued 0027Z Nov 2, valid 0100Z–1200Z Nov 2): wpc.ncep.noaa.gov
    • SPC Current Watches (Severe Thunderstorm Watch 699): spc.noaa.gov
    • NHC Atlantic Tropical Weather Outlook: nhc.noaa.gov
    • NWS Watches, Warnings & Advisories: weather.gov
    • Prior desk on this slug: updated in place from earlier November 1 morning version.

    Disclaimer: Informational only — not an official warning. This is a summary of official public products from the Storm Prediction Center, Weather Prediction Center, National Weather Service, and National Hurricane Center. Always consult the latest official forecasts and warnings for your location.

  • Storm Updates: Quiet Pulse — Oct 31

    Storm Updates: Quiet Pulse — Oct 31

    As of the afternoon desk on Saturday, October 31, 2026 (approximately 9:15 PM PDT / 04:15 UTC November 1), the national picture remains a Quiet Pulse. The Storm Prediction Center’s latest Day 1 Convective Outlook (0100 UTC update issued 0752 PM CDT October 31, valid 010100Z–011200Z) states: “NO SEVERE THUNDERSTORM AREAS FORECAST.” No severe threat is forecast across the U.S. through tonight. The Weather Prediction Center Day 1 Excessive Rainfall Outlook (updated 0003 UTC November 1) maintains a Slight Risk of excessive rainfall for portions of central Arizona. No tropical storm or hurricane watch or warning is in effect on the U.S. coast or Gulf of America.

    Tropical: None · Severe: None · Flood: Slight

    What Changed

    • Compared with this morning’s pulse table (quiet-pulse-2026-10-31-morning: Tropical: None · Severe: None · Flood: Slight): SPC Day 1 continues with no severe thunderstorm areas forecast. The 0100 UTC November 1 update confirms organized severe potential remains closed through tonight. No convective watches or mesoscale discussions are valid.
    • WPC Day 1 Excessive Rainfall Outlook holds the Slight Risk for portions of central Arizona, with adjustments expanding it slightly southward based on observational trends. Active Flood and Flash Flood Warnings continue in Maricopa and Gila Counties, Arizona, on saturated soils from recent heavy rain. No upgrade to Moderate or higher.
    • NHC Atlantic outlook (800 PM EDT October 31): no tropical cyclones; formation not expected during the next 7 days. No U.S. coastal or Gulf watches or warnings.
    • Additional local alerts include Coastal Flood Warnings in the Florida Keys and eastern Putnam County, residual Flash Flood Warnings in portions of Louisiana, Mississippi, Nevada, and Hawaii, a High Wind Watch for the Guadalupe Mountains (NM/TX), and Winter Storm Warnings in Alaska. None open a national Slight/Moderate or tropical lane.
    • Nothing moved to SPC Slight or above, WPC Moderate or above, or opened a U.S. tropical watch/warning. Quiet Pulse criteria hold. Dominant residual ticket remains the Slight excessive rainfall risk and localized flash flooding in central Arizona.

    Live Status

    SPC Day 1 (0100Z November 1) confirms no severe thunderstorm areas forecast through 12Z November 1. Isolated to scattered thunderstorms remain possible across parts of the lower Mississippi Valley into Florida and isolated convection across the western CONUS including southern Arizona and southern Nevada. Limited instability and shear preclude organized severe storms. No watches or MDs in effect.

    WPC Day 1 ERO places a Slight Risk of excessive rainfall for portions of central Arizona associated with the start of a brief atmospheric river (pineapple express) event overnight into Sunday. Soils remain saturated from recent heavy rainfall. No Moderate or higher risk nationally.

    Hotspots

    • Central Arizona: Primary focus under the WPC Slight Risk. Flood Warnings remain in effect for Maricopa and Gila Counties from excessive rainfall and ongoing runoff. Additional heavy rainfall tonight into Sunday will exacerbate flash flooding on saturated soils, low-water crossings, and urban areas including the Phoenix metro.
    • Lower Mississippi Valley and Florida: Isolated to scattered thunderstorms possible through tonight. No severe threat. Residual Coastal Flood Warnings continue in the Florida Keys and eastern Putnam County.
    • Scattered local alerts: Residual Flash Flood Warnings in parts of Louisiana, Mississippi, Nevada, and Hawaii; High Wind Watch for the Guadalupe Mountains of New Mexico and west Texas; Winter Storm Warning for the Klondike Highway area in Alaska.

    Just-Hit

    Earlier Friday evening into Saturday morning, flash flooding in the Phoenix metro produced multiple water rescues of occupants from vehicles stalled in washes and flooded streets (including near Stanford Drive). Flood Warnings continue for ongoing runoff. No widespread tornado or significant severe wind/hail reports logged for the current Day 1 period.

    Pulse Table

    LaneStatusNotes (as of ~9:15 PM PDT / 04:15 UTC Nov 1 2026)
    TropicalNoneNo tropical cyclones in the Atlantic. NHC: formation not expected next 7 days. No coastal or Gulf watches or warnings.
    SevereNoneSPC Day 1 (0100Z Nov 1): NO SEVERE THUNDERSTORM AREAS FORECAST. Isolated storms possible SW and lower MS Valley/FL. No active watches or MDs.
    FloodSlightWPC Day 1 ERO Slight Risk central Arizona. Active Flood/Flash Flood Warnings in Maricopa and Gila Counties AZ. Residual coastal Flood Warnings in FL. No Moderate or higher.

    Restoration Read

    Quiet Pulse with an elevated flood lane. Primary short-term ticket is flash flooding and rapid runoff in central Arizona (especially Maricopa County / Phoenix metro and Gila County) under the Slight Risk and active warnings, on already saturated soils. Additional rainfall tonight into Sunday will prolong the threat. No organized severe damage expected. Residual coastal flooding in Florida. Monitor for water intrusion, debris, and high water on roads. Turn around, don’t drown.

    What This Is Not

    This is a Quiet Pulse. No SPC Slight or higher severe risk on the latest Day 1 outlook. No WPC Moderate or higher excessive rainfall. No tropical storm or hurricane watch or warning on the U.S. coast or Gulf of America. This desk summarizes public products from the SPC, WPC, NWS, and NHC.

    Looking Ahead One Day

    Sunday: SPC Day 2 holds a Marginal Risk of severe thunderstorms from southern Arizona across New Mexico to the western Texas Panhandle for isolated damaging gusts and a couple of tornadoes possible. WPC outlooks point to continued heavy rain potential across the Southwest from the atmospheric river. Flood risk remains elevated in Arizona. No tropical development expected.

    Rising Queries

    Trends unreachable.

    Sources

    Disclaimer: This is a summary of official public products from the Storm Prediction Center, Weather Prediction Center, National Weather Service, and National Hurricane Center. Always consult the latest official forecasts and warnings for your location. This desk does not issue warnings.

  • Storm Updates: Quiet Pulse — Oct 31 Morning

    Storm Updates: Quiet Pulse — Oct 31 Morning

    Tropical: None · Severe: None · Flood: Slight

    What Changed

    • Compared with the previous afternoon desk pulse table (quiet-pulse-2026-10-30-afternoon: Tropical: None · Severe: Marginal · Flood: Slight): SPC Day 1 Convective Outlook (0100 UTC November 1, 2026 update, issued 0752 PM CDT October 31, valid 010100Z–011200Z) continues NO SEVERE THUNDERSTORM AREAS FORECAST. The prior Marginal Risk over southern and central Arizona remains closed. No convective watches currently valid.
    • WPC Day 1 Excessive Rainfall Outlook (updated 0003 UTC November 1, valid 01 UTC Nov 01 – 12 UTC Nov 01) holds a Slight Risk of excessive rainfall for portions of central Arizona, expanded slightly to the international border based on observational trends. Surrounding Marginal areas trimmed in places.
    • Tropical lane remains None. National Hurricane Center Tropical Weather Outlook (800 PM EDT October 31) states tropical cyclone formation is not expected during the next 7 days for the North Atlantic, Caribbean Sea, and Gulf of America. No tropical storm or hurricane watch or warning on the U.S. coast or Gulf.
    • Residual Flood Warnings continue in Maricopa and Gila Counties, Arizona, from prior rainfall on saturated soils. Coastal Flood Warnings remain for the Florida Keys and eastern Putnam County. Flash Flood Warnings active in parts of southern Mississippi. Winter Storm Warnings in portions of Alaska, Colorado, and Nevada. No upgrade to Moderate or higher on the current Day 1 ERO.
    • Nothing moved to SPC Slight or above, WPC Moderate or above, or opened a U.S. tropical watch/warning. Quiet Pulse criteria hold. Dominant residual ticket remains the Slight excessive rainfall risk and localized flash flooding in central Arizona.

    Live Status

    As of the morning desk on Saturday, October 31, 2026 (approximately 8:13 PM PDT / 03:13 UTC November 1), the national picture is a Quiet Pulse. The Storm Prediction Center’s latest Day 1 Convective Outlook (0100 UTC November 1 update) confirms no severe threat is forecast across the U.S. through tonight. Isolated thunderstorms remain possible this evening in parts of the lower to mid Mississippi Valley, over the southern half of Florida, in southeast Arizona, and across parts of the Intermountain West, but no severe threat is expected over the continental U.S.

    The Weather Prediction Center Day 1 Excessive Rainfall Outlook maintains a Slight Risk focused on portions of central Arizona, where antecedent saturation from recent rains and an ongoing atmospheric river setup elevate flash-flood potential. Adjustments expanded the Slight Risk across southern Arizona to the international border. Surrounding Marginal Risk areas were pared in northern/western Nevada, interior California, and eastern Florida. No Moderate or higher risk is indicated on the current Day 1 product.

    National Weather Service products show residual Flood Warnings in effect for Maricopa County (including Indian Bend Wash and Salt River impacts) and Gila County in Arizona. Coastal Flood Warnings remain for the Upper and Middle Florida Keys and eastern Putnam County. A Flash Flood Warning remains in effect for portions of Pearl River County, Mississippi. Winter Storm Warnings continue for higher elevations in Colorado, Alaska, and Nevada. No convective watches are currently valid.

    Pulse Table

    LaneStatusNotes (as of ~03:13 UTC Nov 1 2026 / ~8:13 PM PDT Oct 31)
    TropicalNoneNo tropical cyclones in the Atlantic, Caribbean, or Gulf. NHC: formation not expected next 7 days. No U.S. coastal or Gulf watches or warnings.
    SevereNoneSPC Day 1: NO SEVERE THUNDERSTORM AREAS FORECAST. Prior Arizona Marginal closed. Isolated non-severe storms possible in SW and Gulf Coast regions. No watches.
    FloodSlightWPC Day 1 ERO Slight Risk central Arizona. Residual Flood Warnings AZ (Maricopa, Gila). Coastal Flood Warnings FL Keys/Putnam. Flash Flood Warning MS. No Moderate or higher on Day 1.

    Rising Queries

    Trends unreachable.

    Restoration Read

    Primary residual ticket is localized flash flooding and runoff impacts across central Arizona on already saturated soils under the Slight ERO, plus ongoing river and wash flooding in Maricopa and Gila Counties. Secondary residual is coastal flooding in portions of Florida and isolated flash flooding in southern Mississippi. No widespread organized severe damage expected. Monitor low-water crossings, urban drainage, and burn scars. Turn around, don’t drown.

    What This Is Not

    This is a Quiet Pulse. No SPC Slight or higher severe risk on the latest Day 1 outlook. No WPC Moderate or higher excessive rainfall on Day 1. No tropical storm or hurricane watch or warning on the U.S. coast or Gulf. This desk summarizes public products from the SPC, WPC, NWS, and NHC. Informational only — not an official warning.

    Looking Ahead

    Day 2 SPC holds a Marginal Risk of severe thunderstorms. WPC Day 2 indicates elevated excessive rainfall risks for portions of the Southwest. Monitor for potential escalation overnight into Sunday. No named tropical systems active.

    Informational only — not an official warning. Always check weather.gov for local forecasts and warnings. Turn around, don’t drown.

  • Storm Updates: Quiet Pulse — Oct 30

    Storm Updates: Quiet Pulse — Oct 30

    As of the afternoon desk on Friday, October 30, 2026 (approximately 9:15 PM PDT / 04:15 UTC October 31), the national picture remains a Quiet Pulse. The Storm Prediction Center’s latest Day 1 Convective Outlook (0100 UTC update issued 0733 PM CDT October 30, valid 310100Z–311200Z) holds a Marginal Risk of severe thunderstorms across parts of southern and central Arizona. The Weather Prediction Center Day 1 Excessive Rainfall Outlook (updated 0051 UTC October 31) maintains a Slight Risk for portions of Arizona, southern Utah, and southwestern New Mexico. No tropical storm or hurricane watch or warning is in effect on the U.S. coast or Gulf.

    Tropical: None · Severe: Marginal · Flood: Slight

    What Changed

    • Compared with this morning’s pulse table (quiet-pulse-2026-10-30-morning: Tropical: None · Severe: Marginal · Flood: Slight): SPC Day 1 Marginal Risk remains focused on southern and central Arizona (~40,612 sq mi, ~5.5 million people including Phoenix, Tucson, Mesa, Glendale, Chandler). Primary threats stay isolated severe wind gusts and hail this evening. No convective watches currently valid. Geographic shift from earlier Kansas/Texas noted in morning has held.
    • WPC Day 1 ERO latest update (discussion 853 PM EDT) centers the Slight Risk on portions of Arizona, southern Utah, and southwestern New Mexico. Southwest remains the main focus with additional 1+ inch possible overnight before instability fades. Residual activity noted in the Plains but primary lane is the Southwest. Active Flash Flood Warnings continue in Maricopa County, Arizona (Phoenix metro area), with law enforcement reporting multiple water rescues and 0.75–2.25 inches already fallen.
    • No named tropical cyclone threatens or has just hit U.S. land. Atlantic basin remains quiet with no formation expected in the next 7 days. Remnants of Vance have dissipated; residual moisture supports the Southwest rainfall threat. No coastal or Gulf watches or warnings.
    • Active Flash Flood Warnings issued and remaining in effect for Maricopa County, Arizona (into the late evening MST), with radar-indicated heavy rain and streamflow gauges above alarm stage. Residual High Wind and Winter Storm Warnings continue in Alaska. Special Marine Warnings earlier along the Texas coast. These do not alter the national Slight flood or Marginal severe lanes.
    • Severe lane holds at Marginal. Flood lane remains Slight with verified ongoing flash flooding now centered in the Phoenix area. Quiet Pulse criteria hold: nothing at SPC Slight or above, no WPC ERO Moderate or above, no U.S. tropical watch or warning.

    Live Status

    SPC Day 1 (issued 0733 PM CDT October 30, 2026) lists a Marginal Risk (Level 1 of 5) of severe thunderstorms across parts of southern and central Arizona. A shortwave trough over the Desert Southwest is supporting convective development along a surface trough, with MLCAPE estimated at 1000–1200 J/kg and 0–6 km shear around 30 knots. Isolated severe wind gusts and hail are the primary threats over the next few hours. No current watches or mesoscale discussions active as of the latest scan.

    WPC Day 1 ERO (updated 0051 UTC October 31, discussion 853 PM EDT) places a Slight Risk of excessive rainfall for portions of Arizona, southern Utah, and southwestern New Mexico. The Southwest remains the main focus; additional 1+ inch is possible before available instability is exhausted. HREF probabilities of flash flood guidance exceedance decrease rapidly after 06Z. Earlier Slight coverage over west Texas has shifted or residualized as the primary threat moves west.

    NWS has issued multiple Flash Flood Warnings for Maricopa County, Arizona (including Scottsdale, Paradise Valley, New River, Cave Creek, and Anthem areas), valid into the late evening. Law enforcement reported multiple water rescues. Residual Flood Warnings exist on some river systems from prior rainfall (e.g., Florida). High Wind Warnings and Winter Storm Warnings continue in Alaska. Special Marine Warnings were issued earlier for Texas coastal waters capable of producing waterspouts. SPC today’s storm reports show a delayed tornado report near Marion KS and hail reports in Las Vegas NV; no widespread significant severe reports for the Arizona Marginal area.

    Hotspots

    • Southern and central Arizona (Phoenix metro): Marginal Risk for isolated severe wind gusts and hail this evening. Active Flash Flood Warnings in Maricopa County with 0.75–2.25 inches already fallen, streamflow gauges above alarm, and multiple water rescues reported by law enforcement. Primary short-term focus for both severe and flood lanes. Population centers include Phoenix, Scottsdale, Tucson.
    • Southern Utah and southwestern New Mexico: Included in the WPC Day 1 Slight Risk excessive rainfall. Sensitive terrain, burn scars, and slot canyons most vulnerable to flash flooding. Expansion noted in earlier discussions.
    • Residual river flooding and Alaska: Ongoing Flood Warnings on residual river systems in Florida. High Wind Warnings (gusts to 70–80 mph) and Winter Storm Warning (7–15 inches snow) in Alaska. Not drivers of the national Slight or Marginal lanes.

    Just-Hit / Local Storm Reports

    Active Flash Flood Warnings in Maricopa County, Arizona confirm ongoing heavy rainfall and flooding impacts as of late evening MST. Radar-indicated thunderstorms have produced 0.75–2.25 inches with additional amounts possible in some areas; law enforcement reported multiple water rescues. SPC today’s reports include a delayed tornado near Marion, KS, and hail (quarter to half-dollar size) in the Las Vegas, NV area. No widespread significant severe reports (tornado, large hail, or widespread damaging wind) logged for the current Arizona Marginal area as of this desk. SPC storm reports page continues to update.

    Pulse Table

    LaneStatusNotes (as of ~9:15 PM PDT / 04:15 UTC Oct 31 2026)
    TropicalNoneNo tropical cyclones in the Atlantic. Remnants of Vance dissipated; no U.S. land threat. No coastal or Gulf watches or warnings.
    SevereMarginalSPC Day 1 Marginal Risk (~40.6k sq mi, ~5.5M people) for southern/central Arizona (isolated wind/hail). No active watches.
    FloodSlightWPC Day 1 ERO Slight Risk AZ, southern UT, SW NM. Active FFWs in Maricopa County AZ with water rescues. Residual river Flood Warnings continue.

    Restoration Read

    Quiet Pulse with an elevated flood lane. Primary short-term ticket is flash flooding and rapid runoff in southern and central Arizona (especially Maricopa County / Phoenix metro) under the Slight Risk and active warnings, with verified ongoing impacts including water rescues. Isolated severe wind and hail potential in the same area this evening. Sensitive terrain in southern Utah and southwestern New Mexico also at risk. Residual river stage concerns elsewhere. No organized widespread damage expected. Monitor for water intrusion, debris, and road closures. Turn around, don’t drown.

    What This Is Not

    This is a Quiet Pulse. No SPC Slight or higher severe risk on the latest Day 1 outlook. No WPC Moderate or higher excessive rainfall. No tropical storm or hurricane watch or warning on the U.S. coast or Gulf of America. This desk summarizes public products from the SPC, WPC, NWS, and NHC.

    Looking Ahead

    SPC Day 2 outlook shows no severe areas forecast. Residual moisture continues to support showers and thunderstorms across the Southwest into the weekend. Halloween weekend looks unsettled with additional rainfall possible across Arizona, with Flood Watches extending into Saturday night–Sunday. No elevated severe or flood lanes open beyond current products yet. Monitor for any overnight updates to Flash Flood Warnings in Arizona.

    Rising Queries

    • Arizona storms Halloween weekend
    • Phoenix flash flood warning
    • Maricopa County flooding
    • severe thunderstorm Arizona
    • Southwest excessive rainfall

    Sources

    • Storm Prediction Center (Day 1 Outlook 0100Z Oct 31, issued 0733 PM CDT Oct 30; today’s storm reports)
    • Weather Prediction Center (Day 1 ERO updated 0051 UTC Oct 31, Slight Risk AZ/southern UT/SW NM)
    • National Weather Service (Flash Flood Warnings in Maricopa AZ including water rescues, residual Flood Warnings, Alaska warnings)
    • National Hurricane Center (Atlantic quiet; no U.S. land threat)
    • Previous desk: quiet-pulse-2026-10-30-morning

    Informational only — not an official weather warning. Always check weather.gov for local forecasts and warnings. Turn around, don’t drown.

  • Storm Updates: Quiet Pulse — Oct 30 Morning

    Storm Updates: Quiet Pulse — Oct 30 Morning

    As of the morning desk on Friday, October 30, 2026 (updated approximately 7:15 PM PDT / 02:15 UTC October 31), the national picture remains a Quiet Pulse. The Storm Prediction Center’s latest Day 1 Convective Outlook (0100 UTC update issued 0733 PM CDT October 30, valid 310100Z–311200Z) holds a Marginal Risk of severe thunderstorms across parts of southern and central Arizona. The Weather Prediction Center Day 1 Excessive Rainfall Outlook maintains a Slight Risk for portions of west and central Texas and southeastern New Mexico. No tropical storm or hurricane watch or warning is in effect on the U.S. coast or Gulf.

    Tropical: None · Severe: Marginal · Flood: Slight

    What Changed

    • Compared with the previous desk pulse table (quiet-pulse-2026-10-29-afternoon: Tropical: None · Severe: Marginal · Flood: Slight): SPC Day 1 Marginal Risk has shifted from central and northeast Kansas (~19,351 sq mi) and southwest Texas to southern and central Arizona (~40,612 sq mi, ~5.5 million people including Phoenix, Tucson, Mesa, Glendale, Chandler). Primary threats are isolated severe wind gusts and hail this evening. No convective watches currently valid.
    • WPC Day 1 ERO continues a Slight Risk for west and central Texas and southeastern New Mexico from residual Vance moisture. Active Flash Flood Warnings remain in effect for portions of west Texas (Howard, Mitchell, Scurry, Dawson, Gaines Counties), with 1–2 inches already fallen and flooding ongoing. Marginal Risk persists near the MO/KS/IA/NE border. Flood lane remains Slight.
    • No named tropical cyclone threatens or has just hit U.S. land. Atlantic basin remains quiet with no formation expected in the next 7 days. Remnants of Vance have dissipated; residual moisture supports the Southwest rainfall threat. No coastal or Gulf watches or warnings.
    • Residual High Wind Warnings and Winter Storm Warnings remain active in portions of Alaska. Special Marine Warnings were issued along the Texas coast for waterspouts. Flash Flood Warnings also noted in Maricopa County, Arizona. These do not alter the national Slight flood or Marginal severe lanes.
    • Severe lane holds at Marginal with a geographic shift to Arizona. Flood lane remains Slight with verified ongoing flash flooding in west Texas. Quiet Pulse criteria hold: nothing at SPC Slight or above, no WPC ERO Moderate or above, no U.S. tropical watch or warning.

    Live Status

    SPC Day 1 (issued 0733 PM CDT October 30, 2026) lists a Marginal Risk (Level 1 of 5) of severe thunderstorms across parts of southern and central Arizona. A shortwave trough over the Desert Southwest is supporting convective development along a surface trough, with MLCAPE estimated at 1000–1200 J/kg and 0–6 km shear around 30 knots. Isolated severe wind gusts and hail are the primary threats over the next few hours. No current watches or mesoscale discussions active as of the latest scan.

    WPC Day 1 ERO places a Slight Risk of excessive rainfall for portions of west and central Texas and southeastern New Mexico. Hourly rain amounts of up to 2 inches are possible with cell mergers or training, and local totals of 5 inches near the TX/MX border. Elevated PWATs of 1.5–2 inches from residual Vance moisture support the threat. Active Flash Flood Warnings confirm ongoing impacts in west Texas counties. Flood Watches have been in effect for central Arizona.

    NWS has residual Flood Warnings on some river systems from prior rainfall and localized coastal flood advisories (e.g., Florida Keys). High Wind Warnings and Winter Storm Warnings continue in Alaska. Special Marine Warnings have been issued for waters along the Texas coast capable of producing waterspouts and gusts to 40 knots. Flash Flood Warnings active in Maricopa, AZ.

    Hotspots

    • West and central Texas / southeastern New Mexico: Slight Risk excessive rainfall continuing into the evening. Active Flash Flood Warnings in Howard, Mitchell, Scurry, Dawson, and Gaines Counties with 1–2 inches already observed and flooding ongoing. Dominant flood lane. Urban areas, highways, and low-lying terrain most vulnerable.
    • Southern and central Arizona: Marginal Risk for isolated severe wind gusts and hail this evening. Population centers include Phoenix and Tucson. Shortwave trough and surface trough providing lift and shear. Primary short-term severe focus. Flood Watches earlier in the day for central Arizona.
    • Residual river and coastal flooding plus Alaska: Ongoing Flood Warnings on residual river systems in Florida and New Mexico. High Wind Warnings (gusts to 70–80 mph) and Winter Storm Warning (7–15 inches snow) in Alaska. Not drivers of the national Slight or Marginal lanes.

    Pulse Table

    LaneStatusNotes (as of ~7:15 PM PDT / 02:15 UTC Oct 31 2026)
    TropicalNoneNo tropical cyclones in the Atlantic. Remnants of Vance dissipated; no U.S. land threat. No coastal or Gulf watches or warnings.
    SevereMarginalSPC Day 1 Marginal Risk (~40.6k sq mi, ~5.5M people) for southern/central Arizona (isolated wind/hail). No active watches.
    FloodSlightWPC Day 1 ERO Slight Risk west/central TX and SE NM. Active FFWs in west Texas counties. Residual river Flood Warnings continue. Flood Watches in AZ earlier.

    Restoration Read

    Quiet Pulse with an elevated flood lane. Primary short-term ticket is flash flooding and rapid runoff in west and central Texas and southeastern New Mexico under the Slight Risk, with verified ongoing impacts in multiple west Texas counties. Isolated severe wind and hail potential in southern and central Arizona this evening. Residual river stage concerns on Flood Warnings in Florida and New Mexico. No organized widespread damage expected. Monitor for water intrusion, debris, and road closures. Turn around, don’t drown.

    What This Is Not

    This is a Quiet Pulse. No SPC Slight or higher severe risk on the latest Day 1 outlook. No WPC Moderate or higher excessive rainfall. No tropical storm or hurricane watch or warning on the U.S. coast or Gulf of America. This desk summarizes public products from the SPC, WPC, NWS, and NHC.

    Looking Ahead

    SPC Day 2 outlook shows no severe areas forecast. Residual moisture from Vance continues to support showers and thunderstorms across the Southwest into the weekend. Halloween weekend looks unsettled with additional rainfall possible across Arizona and the southern Plains, but no elevated severe or flood lanes open beyond current products yet. Monitor for any overnight updates to Flash Flood Warnings in Texas and Arizona.

    Rising Queries

    Trends unreachable.

    Sources

    • Storm Prediction Center (Day 1 Outlook 0100Z Oct 31, issued 0733 PM CDT Oct 30)
    • Weather Prediction Center (Day 1 ERO, Slight Risk TX/NM)
    • National Weather Service (watches, warnings, Flash Flood Warnings in west Texas and Maricopa AZ, residual Flood Warnings)
    • National Hurricane Center (Atlantic quiet; remnants of Vance)
    • Previous desk: quiet-pulse-2026-10-29-afternoon

    Informational only — not an official weather warning. Always check weather.gov for local forecasts and warnings. Turn around, don’t drown.

  • Storm Updates: Four Corners Flood — Oct 22 Morning

    Storm Updates: Four Corners Flood — Oct 22 Morning

    As of this Thursday morning desk, October 22, 2026 (approximately 9:12 PM PDT / 12:12 AM EDT October 23 / 0412Z October 23), the national picture centers on the Southwest and Four Corners. The Weather Prediction Center holds a Moderate Risk of excessive rainfall over portions of southwest Colorado, southern Utah and northwestern New Mexico. The Storm Prediction Center maintains a Slight Risk of severe thunderstorms from eastern Arizona into western New Mexico. Post-Tropical Cyclone Josephine continues moving away with no U.S. coastal watches or warnings.

    Tropical: None · Severe: Slight · Flood: Moderate

    What Changed

    • Compared with the October 21 afternoon desk (quiet-pulse-2026-10-21-afternoon) and the prior version of this morning desk: SPC Day 1 Convective Outlook (0100 UTC October 23 / 8:01 PM CDT Thursday, October 22, 2026, valid 230100Z–231200Z) continues a SLIGHT RISK of severe thunderstorms from eastern Arizona into western New Mexico. Scattered severe storms remain possible across the Southwest and Great Basin tonight, with the most intense cells expected across western New Mexico through the remainder of this evening. Large hail, damaging winds, and a tornado or two are possible. No upgrade beyond Slight.
    • WPC Day 1 Excessive Rainfall Outlook (updated 0042 UTC Friday October 23 / discussion 8:44 PM EDT Thursday, valid 01Z–12Z October 23) holds a MODERATE RISK over portions of southwest Colorado, southern Utah and northwestern New Mexico (expanded southward into NW NM). Additional 1–2 inches (locally higher) possible; flash flooding likely in terrain, burn scars and slot canyons. Surrounding Slight Risk remains.
    • NHC confirms Josephine has become a powerful extratropical low. No tropical storm or hurricane watch or warning is in effect on the U.S. coast or Gulf of America. The system is accelerating northeastward away from the United States. Eastern Pacific Tropical Storm Vance remains well south of Mexico with no U.S. land threat.
    • Severe Thunderstorm Warnings and a Severe Thunderstorm Watch have been in effect across portions of Arizona. Flash Flood Warnings remain active for sensitive areas including Apache County (Canyon de Chelly / Chinle Creek) and other Four Corners drainages. Flood Watches continue regionally.
    • Nothing material closed the severe or flood lanes. Moderate flood risk is the highest open categorical level on Day 1. Quiet Pulse remains closed. This morning desk is updated in place under the standard slug; afternoon companion already live under quiet-pulse-2026-10-22-afternoon.

    Live Status

    SPC Day 1 (0100Z October 23) lists a Slight Risk (Level 2 of 5) from eastern Arizona into western New Mexico and the Four Corners. Mid-level southerly flow remains strong on the eastern periphery of the upper trough. Ongoing convection is a mix of supercells and linear clusters shifting into western New Mexico and southern Colorado. Buoyancy supports robust storms into the evening (MLCAPE around 1000 J/kg in favored areas) with deep-layer shear of 50–60 kt. Primary hazards are large hail, damaging winds and a tornado or two, maximized from northwestern New Mexico northward toward southern Colorado where low-level flow is backed and terrain influences hodograph curvature. Marginal Risk covers broader portions of the Great Basin.

    WPC Day 1 maintains the Moderate Risk (Level 3 of 4) over southwest Colorado (San Juan Mountains), southern Utah and northwestern New Mexico. Antecedent rainfall, upslope flow and training convection support elevated flash-flood potential. Hourly rates of 0.5–1+ inches are possible; additional 1–2 inches (locally higher) expected in the Moderate area. A broader Slight Risk covers additional Southwest terrain. Marginal Risk remains for parts of the interior Northwest and southeast Florida.

    Hotspots

    Four Corners (southwest Colorado, southern Utah, northwest New Mexico): Moderate excessive rainfall risk. Heavy rain cores on the San Juans and surrounding high terrain, plus southern Utah canyons and burn scars. Life-threatening flooding possible in slot canyons, dry washes and urban areas. Evacuation orders noted earlier in some southern Utah locations. Flash Flood Warnings verified in upstream Arizona basins.

    Eastern and central Arizona into western New Mexico: Slight severe risk. Supercells and clusters producing large hail and damaging winds; tornado potential elevated where low-level shear and topography align. Phoenix metro and Mogollon Rim remain in or near the risk area. Flash flooding accompanies the convection.

    Residual California and Great Basin: Isolated severe hail/wind and brief tornado potential under limited instability ahead of the upper low. Marginal excessive rainfall risk in places; main threat is terrain-driven runoff rather than widespread flooding.

    Just-Hit

    National Weather Service offices have issued multiple Severe Thunderstorm Warnings across Arizona (Flagstaff and Phoenix CWAs) for 60 mph winds and quarter-size hail. A Severe Thunderstorm Watch has been in effect for portions of northern and eastern Arizona. Flash Flood Warnings are active for Apache County (Canyon de Chelly / Chinle Creek) with considerable damage threat noted. Local storm reports continue to verify hail and wind within the Slight Risk area. Rapid runoff is occurring in sensitive basins including the Paria River and Oak Creek corridors.

    Pulse Table

    LaneStatusNotes (as of ~9:12 PM PDT / 0412Z 23 Oct 2026)
    TropicalNoneJosephine post-tropical, accelerating NE away. No U.S. coastal watches or warnings. No other named systems threatening U.S. land or Gulf. TS Vance far south of Mexico.
    SevereSlightSPC Day 1 (0100Z Oct 23): Slight from eastern AZ into western NM and Four Corners. Large hail, damaging winds, few tornadoes. Prior Severe Thunderstorm Warnings and Watch in AZ. Marginal elsewhere.
    FloodModerateWPC Day 1 Moderate over SW CO, southern UT, NW NM. Flash Flood Warnings live in AZ. Slight Risk broader Southwest. Terrain, burn scars and canyons primary concern.

    Rising Queries

    Trends unreachable.

    Restoration Read

    Primary restoration drivers are large hail and damaging wind impacts to roofs, vehicles, windows and vegetation across eastern and central Arizona, plus flash-flood damage to roads, low-water crossings, homes in washes and infrastructure in the Four Corners Moderate area. Burn scars and slot canyons remain highly sensitive. No tropical wind or surge component on U.S. land. Water and hail remain the dominant ticket generators for the next 12–24 hours.

    What This Is Not

    This is not a tropical cyclone landfall, a High Risk excessive rainfall event, or an Enhanced or Moderate severe outlook. No hurricane or tropical storm warning is in effect for any U.S. coastline or the Gulf of America. The Moderate flood risk is geographically focused on the Four Corners high terrain rather than a broad river flood. Isolated severe reports are occurring, but coverage remains scattered.

    Looking Ahead One Day

    Friday: The upper low continues northeastward. SPC Day 2 maintains residual severe potential shifting eastward. WPC Day 2 carries the excessive rainfall threat into the southern and central High Plains. Josephine remains post-tropical and moves farther away. California and the Southwest see gradual drying behind the system, though residual runoff continues in saturated basins. No new tropical threat indicated for U.S. land.

    Sources

    Informational only — not an official warning. Always confirm with the latest official forecasts from weather.gov, spc.noaa.gov, wpc.ncep.noaa.gov, and nhc.noaa.gov. Turn around, don’t drown.

  • Storm Updates: Four Corners Flood — Oct 22

    Storm Updates: Four Corners Flood — Oct 22

    As of this Thursday afternoon desk, October 22, 2026 (approximately 9:14 PM PDT / 12:14 AM EDT October 23 / 0414Z October 23), the national picture centers on the Southwest and Four Corners. The Weather Prediction Center maintains a Moderate Risk of excessive rainfall over portions of southwest Colorado, southern Utah and northwestern New Mexico. The Storm Prediction Center holds a Slight Risk of severe thunderstorms from eastern Arizona into western New Mexico, with scattered severe storms remaining possible across the Southwest and Great Basin into the evening. Post-Tropical Cyclone Josephine continues accelerating northeastward away with no U.S. coastal watches or warnings.

    Tropical: None · Severe: Slight · Flood: Moderate

    What Changed

    • Compared with this morning’s pulse table (quiet-pulse-2026-10-22-morning): SPC Day 1 Convective Outlook (latest 0100 UTC October 23 / 8:01 PM CDT Thursday, October 22, 2026, valid 230100Z–231200Z) continues a SLIGHT RISK of severe thunderstorms from eastern Arizona into western New Mexico. Scattered severe storms remain possible across the Southwest and Great Basin tonight, with the most intense cells expected across western New Mexico through the remainder of this evening. Large hail, damaging winds, and a tornado or two are possible. No upgrade beyond Slight; category unchanged.
    • WPC Day 1 Excessive Rainfall Outlook (updated 0042 UTC Friday October 23 / discussion 8:44 PM EDT Thursday, valid 01Z–12Z October 23) holds a MODERATE RISK over portions of southwest Colorado, southern Utah and northwestern New Mexico. Additional 1–2 inches (locally higher) possible amid training convection and upslope flow; flash flooding likely in terrain, burn scars and slot canyons. Slight Risk surrounds it. Category unchanged from morning.
    • NHC confirms Josephine has become a powerful extratropical low (last advisory). No tropical storm or hurricane watch or warning remains in effect on the U.S. coast or Gulf of America. The system is accelerating northeastward away from the United States. Eastern Pacific Tropical Storm Vance continues well south of Mexico with no U.S. land threat.
    • Severe Thunderstorm Warnings and watches have been in effect across portions of Arizona and New Mexico. Tornado Warnings were issued earlier for parts of Apache and Navajo Counties, Arizona, and into New Mexico. Flash Flood Warnings remain active for sensitive areas including Apache County (Canyon de Chelly / Chinle Creek) with considerable damage threat, and other Four Corners drainages. Local storm reports continue to verify large hail and damaging winds.
    • Nothing material closed the severe or flood lanes. Moderate flood risk remains the highest open categorical level on Day 1. Quiet Pulse remains closed. This afternoon desk updates in place under the standard slug and links the morning desk under Sources.

    Live Status

    SPC Day 1 (0100Z October 23) lists a Slight Risk (Level 2 of 5) from eastern Arizona into western New Mexico. Mid-level southerly flow remains strong on the eastern periphery of the upper trough. Ongoing convection is a mix of supercells and linear clusters shifting into western New Mexico and southern Colorado. Buoyancy around 1000 J/kg supports robust storms into the evening, with favorable deep-layer shear (50–60 kt) for hail and severe gusts. A tornado or two remains possible, particularly from northwestern New Mexico northward toward southern Colorado where low-level flow is backed and terrain influences hodograph curvature. Farther north into the Great Basin, isolated strong to severe storms remain possible under more limited buoyancy, with damaging gusts the primary hazard. Marginal Risk covers broader portions of the region.

    WPC Day 1 maintains the Moderate Risk (Level 3 of 4) over southwest Colorado (San Juan Mountains), southern Utah and northwestern New Mexico. Anomalous moisture, diffluent flow, and training convection continue to support flash flooding. The San Juans see the heaviest accumulations, with model consensus for 3–4 inches and localized higher. Broader Slight Risk covers additional Southwest and Four Corners areas. Marginal Risk remains for parts of the interior Northwest and southeast Florida.

    Hotspots

    Four Corners (southwest Colorado, southern Utah, northwest New Mexico): Moderate excessive rainfall risk. Heavy rain cores on the San Juans and surrounding high terrain, plus southern Utah canyons and burn scars. Flash Flood Warnings already verified in parts of Arizona that feed into the region. Life-threatening flooding possible in slot canyons, dry washes and urban areas. Evacuation orders noted earlier in some southern Utah locations.

    Eastern Arizona into western New Mexico: Slight severe risk with active convection. Supercells and clusters producing large hail and damaging winds; tornado potential elevated where low-level shear and terrain align. Phoenix metro and Mogollon Rim remain influenced. Flash flooding accompanies the convection. Verifying reports of hail and wind continue.

    Residual California and Great Basin: Isolated severe hail/wind and brief tornado potential under limited instability ahead of the upper low. Marginal excessive rainfall risk in places; main threat is terrain-driven runoff rather than widespread flooding.

    Just-Hit

    National Weather Service offices have issued multiple Severe Thunderstorm Warnings across Arizona (Flagstaff and Phoenix CWAs) for 60 mph winds and quarter-size hail. Tornado Warnings were issued this afternoon for portions of Apache and Navajo Counties, Arizona, and parts of New Mexico. Flash Flood Warnings remain active for Apache County (Canyon de Chelly / Chinle Creek) with considerable damage threat noted. Local storm reports continue to verify hail and wind within the Slight Risk area. Rapid runoff is occurring in sensitive basins including the Paria River and Oak Creek corridors. No confirmed tornado damage reports received so far today. No widespread major river flooding reported.

    Pulse Table

    LaneStatusNotes (as of ~9:14 PM PDT / 0414Z 23 Oct 2026)
    TropicalNoneJosephine post-tropical, accelerating NE away. No U.S. coastal watches or warnings. TS Vance far south of Mexico. No other named systems threatening U.S. land or Gulf.
    SevereSlightSPC Day 1 (0100Z Oct 23): Slight from eastern AZ into western NM and Four Corners. Large hail, damaging winds, tornado or two possible. Prior warnings and watches in AZ/NM. LSRs verifying hail/wind. Marginal elsewhere.
    FloodModerateWPC Day 1 Moderate over SW CO, southern UT, NW NM. Flash Flood Warnings live in AZ and NM. Slight Risk broader Southwest. Terrain, burn scars and canyons primary concern.

    Rising Queries

    Trends unreachable.

    Restoration Read

    Primary restoration drivers are large hail and damaging wind impacts to roofs, vehicles, windows and vegetation across eastern and central Arizona, plus flash-flood damage to roads, low-water crossings, homes in washes and infrastructure in the Four Corners Moderate area. Burn scars and slot canyons remain highly sensitive. Isolated tornado potential adds tree and structure damage risk where rotation was indicated. No tropical wind or surge component on U.S. land. Water and hail remain the dominant ticket generators for the next 12–24 hours.

    What This Is Not

    This is not a tropical cyclone landfall, a High Risk excessive rainfall event, or an Enhanced or Moderate severe outlook. No hurricane or tropical storm warning is in effect for any U.S. coastline or the Gulf of America. The Moderate flood risk is geographically focused on the Four Corners high terrain rather than a broad river flood. Isolated to scattered severe reports are occurring, but coverage remains limited.

    Looking Ahead One Day

    Friday: The upper low continues northeastward. SPC Day 2 maintains residual severe potential shifting eastward. WPC Day 2 carries the excessive rainfall threat into the southern and central High Plains. Josephine remains post-tropical and moves farther away. California and the Southwest see gradual drying behind the system, though residual runoff continues in saturated basins. No new tropical threat indicated for U.S. land.

    Sources

    Informational only — not an official warning. Always confirm with the latest official forecasts from weather.gov, spc.noaa.gov, wpc.ncep.noaa.gov, and nhc.noaa.gov. Turn around, don’t drown.

  • Storm Updates: Arizona Slight — Oct 21

    Storm Updates: Arizona Slight — Oct 21

    Tropical: None · Severe: Slight · Flood: Slight

    What Changed

    • Compared with this morning’s pulse table (which carried an Enhanced risk over central Arizona): the latest SPC Day 1 Convective Outlook (0100 UTC October 22 / 6:00 PM PDT October 21, 2026, valid 220100Z–221200Z, issued 0800 PM CDT) holds a SLIGHT RISK of severe thunderstorms for much of Arizona into far southeast Nevada and southwest Utah. Large hail remains the primary threat, with a couple of tornadoes and damaging winds possible overnight. The categorical risk stepped down from the earlier Enhanced area focused on Flagstaff–Prescott–Sedona.
    • Severe Thunderstorm Watches have been active across northern and central Arizona; earlier Tornado Watch 688 transitioned. Local storm reports through the day and evening include hail of 1–2.5 inches (golf ball to larger) near Flagstaff, Prescott, Deer Valley, Mesa, Safford, and Maricopa, plus measured gusts to 60+ mph. Flash Flood Warnings continue on higher terrain, burn scars, and dry washes in Arizona and southern Utah.
    • WPC Day 1 Excessive Rainfall Outlook (updated ~0015 UTC October 22, valid 01Z–12Z October 22) maintains a SLIGHT RISK over the Southwest and Four Corners, including Southern California ranges and much of Arizona. No upgrade to Moderate. A Marginal risk persists near the lower Texas coast.
    • Subtropical Storm Josephine (Advisory 1 at 5 PM AST, subsequent updates) is centered near 37.4N 69.5W with 65 mph winds, moving north then accelerating northeast away from the United States. No tropical storm or hurricane watches or warnings are in effect on the U.S. coast or Gulf of America. Tropical Storm Vance remains far south of Mexico in the Eastern Pacific.
    • The morning desk is linked under Sources. Arizona severe and Southwest flood lanes remain open as the restoration drivers. Quiet Pulse is closed.

    Live Status

    As of this Wednesday afternoon desk, October 21, 2026 (approximately 9:14 PM PDT / 12:14 AM EDT October 22 / 0414Z October 22), the SPC lists a Slight risk (Level 2 of 5) across much of Arizona, including the Phoenix metro (Phoenix, Mesa, Glendale, Chandler, Scottsdale), extending into far southeast Nevada and southwest Utah through the overnight. Marginal risk covers coastal central and southern California. Supercells are favored with elongated hodographs and 55–65 kt effective shear; large hail is the primary threat, with severe gusts and a couple of tornadoes possible where low-level curvature increases near the Mogollon Rim and local terrain.

    The flood lane stays Slight. WPC continues the Slight risk of excessive rainfall over the Southwest and Four Corners, driven by a deep cyclone near the California coast scooping anomalous tropical moisture (IVT values of 300–700 kg/ms, PWAT 0.75–1.5 inches). Hourly rainfall amounts to 2–2.5 inches remain possible with training or backbuilding over terrain, burn scars, urban areas, slot canyons, and dry washes. Day 2 outlooks maintain Slight risk over portions of southeast Arizona.

    The tropical lane is closed for U.S. land impact. Subtropical Storm Josephine is a few hundred miles offshore the Mid-Atlantic, forecast to move northeastward away from the United States with no coastal watches or warnings. Residual coastal flood and high-surf products from the offshore system continue along parts of the East Coast but do not meet Moderate or higher excessive rainfall thresholds. See the Josephine 2026 storm hub.

    Hotspots

    Central and northern Arizona (Mogollon Rim to Flagstaff–Prescott): Primary overnight severe threat. Ongoing and additional supercells capable of large hail (up to 2+ inches), damaging winds, and isolated tornadoes. Multiple warnings and reports have already verified across Yavapai, Coconino, and Navajo counties.

    Phoenix metro and southern Arizona: Included in the Slight risk envelope. Multiple rounds of storms have produced hail and wind damage; continued supercell potential overnight as the axis shifts eastward.

    Southern California coastal ranges and Transverse Ranges: Marginal severe (isolated gusts, low-end tornado potential) plus Slight flood risk as the Pacific cyclone approaches. Terrain-enhanced rainfall and burn-scar runoff are the primary concerns.

    Just-Hit

    Local storm reports and media accounts through the day and early evening document hail of 1–2.5 inches (golf-ball size and larger) near Flagstaff, Prescott, Deer Valley, Mesa, Safford, and Maricopa County, with reports of shattered windows, dented vehicles, and downed trees (including ponderosa pines in the Coconino National Forest). Tornado warnings were issued for parts of Coconino and Yavapai Counties. Flash Flood Warnings remain active over parts of southern Utah, Arizona burn scars, and higher terrain. No widespread major river flooding is reported, but the setup supports rapid runoff overnight.

    Pulse Table

    LaneStatusNotes (as of ~9:14 PM PDT / 0414Z 22 Oct 2026)
    TropicalNoneSubtropical Storm Josephine ~37.4N 69.5W, 65 mph, accelerating NE away from the U.S. No coastal watches or warnings. TS Vance far south of Mexico.
    SevereSlightSPC Day 1 (0100Z Oct 22): Slight over much of AZ into SE NV/SW UT for large hail, couple tornadoes, damaging winds. Marginal coastal CA. Active warnings and verifying LSRs.
    FloodSlightWPC Day 1 Slight over Southwest/Four Corners including SoCal ranges and AZ. Hourly 2–2.5″ possible. Burn scars, urban areas, canyons primary concern.

    Rising Queries

    • Arizona tornado watch
    • Phoenix hail storm October 21
    • Flagstaff severe weather
    • Mogollon Rim storms
    • Southern California flash flood

    Restoration Read

    Dominant ticket is Arizona severe (Slight overnight after daytime Enhanced verification with large hail and wind damage) plus Southwest Slight flood risk. Phoenix metro and central Arizona face continued supercell potential tonight. Southern California sees the moisture plume and terrain-enhanced rain. Monitor official sources for active warnings. This morning’s desk is linked under Sources.

    What This Is Not

    This is not an official forecast or warning. It is a desk summary of public products from the SPC, WPC, NWS, and NHC. No Moderate or higher flood risk is in effect on Day 1, no U.S. tropical watches or warnings are active, and the severe categorical risk has stepped down from Enhanced to Slight for the overnight period.

    Looking Ahead

    Thursday: SPC Day 2 carries a Slight risk over portions of southeast Arizona. WPC Day 2 continues Slight excessive rainfall potential over the Southwest. Josephine becomes post-tropical and accelerates farther northeast. The Pacific cyclone continues to influence California and the Southwest through Thursday, with the primary severe axis shifting eastward into Arizona and southwest New Mexico overnight into early Thursday.

    Sources

    Informational only — not an official warning. Always confirm with the latest official forecasts from weather.gov, spc.noaa.gov, wpc.ncep.noaa.gov, and nhc.noaa.gov. Turn around, don’t drown.