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
| Lane | Status | Notes (as of ~9:15 PM PDT / 04:15 UTC Oct 31 2026) |
|---|---|---|
| Tropical | None | No tropical cyclones in the Atlantic. Remnants of Vance dissipated; no U.S. land threat. No coastal or Gulf watches or warnings. |
| Severe | Marginal | SPC Day 1 Marginal Risk (~40.6k sq mi, ~5.5M people) for southern/central Arizona (isolated wind/hail). No active watches. |
| Flood | Slight | WPC 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.

