This is a live Monday morning snapshot of local storm-type events across the United States as of Monday, September 14, 2026. Overnight the organized wind corridor that ran the upper Ohio Valley into New York is down. No Storm Prediction Center watches are currently valid. The Day 1 Convective Outlook issued 0746 AM CDT holds a Slight Risk of severe thunderstorms across parts of eastern Nebraska into western and central Iowa this afternoon and evening. Large hail, severe gusts, and a few tornadoes all appear possible. The Weather Prediction Center overlays a Moderate Risk of excessive rainfall on central and southwestern Iowa, with a broader Slight Risk from eastern Nebraska through the Midwest and a separate Slight Risk over the Southwest monsoon corridor.
These are county- and ZIP-scale thunderstorms and flash-flood pulses, not a U.S. mainland hurricane landfall. Restoration exposure today is wind and hail on the Nebraska–Iowa Slight, interior water where Iowa cells train south of I-80 tonight, and leftover tree-and-roof work from Sunday evening in Ohio, Pennsylvania, West Virginia, and New York. Conditions change fast. Verify with the National Weather Service for the specific county or ZIP before you roll.
What is live this morning
SPC lists no current convective watches. The most recently issued watch was number 667 earlier in the week; Sunday’s Ohio Valley–Northeast slight-risk corridor produced local severe thunderstorm warnings and wind damage but did not carry an overnight watch into Monday morning.
The 1300 UTC Day 1 outlook (valid 1300Z Monday through 1200Z Tuesday) draws the Slight Risk from roughly Grand Island and Hastings east-northeast through Omaha and Lincoln into western and central Iowa, including the Des Moines metro on the eastern edge. A Marginal Risk wraps a wider ring from the Dakotas and Minnesota south through Kansas. Elevated convection is already ongoing this morning across the central Plains and mid Missouri Valley on a strong low-level jet. SPC expects that band to stay mostly sub-severe and weaken late morning, then a new surface-based corridor to fire along or just ahead of a cold front across eastern Nebraska by late afternoon.
WPC’s Day 1 Excessive Rainfall Outlook, updated 0733 UTC, is the louder product this morning: Moderate Risk over portions of central and southwestern Iowa, with locally 3 to 6 inches possible south of I-80 toward Des Moines and points southwest. A broad Slight Risk still covers much of the Midwest from eastern Nebraska through southern Minnesota and the Door Peninsula, plus a separate Slight over eastern Arizona, New Mexico, and southwestern Colorado.
Hotspot 1 — Eastern Nebraska into western and central Iowa
This is today’s organized severe desk. A mid-level shortwave and 50–70-plus kt mid-level jet move east-northeast across the northern Plains. Rich low-level moisture is forecast to stream north into eastern Nebraska and western Iowa after morning convection clears. SPC allows a narrow corridor of 2,000–3,000+ J/kg MLCAPE if surface temperatures reach the low to mid 80s by late afternoon. Initial storms should be supercellular enough for large hail. Mode is expected to transition quickly to clusters and line segments. A 40–50 kt nocturnal low-level jet supports ample storm-relative helicity this evening; a sustained surface-based supercell would conditionally be capable of a strong tornado. That is the official language, not a guarantee that one occurs.
Cities and counties to watch: Lincoln, Omaha, Council Bluffs, Sioux City, Des Moines, Ames, and the I-80 belt from Grand Island through western Iowa. Watch issuance, if it comes, is an afternoon product — not a morning one.
Restoration read: hail and wind first on the Nebraska side; water second once the same storms cluster over Iowa after dark. Stage tarps and generators before 4 p.m. local. If a warning includes both wind and heavy rain, treat the ZIP as a dual ticket by morning.
Hotspot 2 — Central and southwestern Iowa flood overlay
WPC introduced a small Moderate Risk for D1 in coordination with the Des Moines office. HREF blended mean QPF runs 3–5 inches over the area encompassing Des Moines and points south and southwest. Neighborhood probabilities for more than 3 inches are 60–80 percent in that pocket, with 25–30 percent for more than 5 inches. Three-hour flash-flood guidance exceedance sits 50–70 percent. The main concerns are urban footprints and low-water crossings south of I-80. Heavy rain is expected to linger into early Tuesday morning.
A broader Slight still covers eastern Nebraska into southern Minnesota. Isolated flash-flood concerns this morning ride the progressive elevated band; the more appreciable footprint is the evening and overnight wave.
Restoration read: this is tonight’s water ticket. Extraction and drying clocks start the same night water is inside. Do not wait for a river flood warning if streets and finished basements are already taking the 1-inch-per-hour cores.
Hotspot 3 — Sunday just-hit and Southwest scatter
Overnight LSRs from the 1200 UTC Sunday–Monday window show the Ohio Valley–Northeast slight-risk corridor verified as wind, not tornadoes. Preliminary reports include a roof ripped off a home and multiple trees down in Fox Township, Carroll County, Ohio; trees and wires across Lawrence, Butler, Crawford, McKean, and Clearfield counties in Pennsylvania; trees on structures and roads in Washington County, Ohio, and Wood County, West Virginia; and additional tree and wire damage in Onondaga, Oneida, Franklin, Fulton, and Saratoga counties in New York. Isolated 1.00-inch hail fell near Monarch and Raynesford, Montana, and 2 south of Sterling, Nebraska, after midnight. A 61 mph gust was measured near Patagonia, Arizona.
Today the Southwest stays a flood-and-outflow desk. WPC keeps a Slight Risk of excessive rainfall over eastern Arizona, much of New Mexico, and southwestern Colorado on monsoon-style cells, burn scars, and slot canyons. SPC does not carry 5 percent severe probabilities there, but isolated strong gusts and small to near-severe hail are possible where heating is strongest. Eastern North Carolina sits under a cold front with only a low-end isolated wind/hail mention.
Just hit
Sunday’s upper Ohio Valley–central New York Slight Risk is yesterday’s ticket: trees, wires, and isolated roof work from eastern Ohio through northwest Pennsylvania into central New York. Watch 667 from Saturday is long expired. There is no named tropical cyclone threatening U.S. land this morning. National Hurricane Center discussion shows no Atlantic tropical cyclones; Tropical Storm Norbert and a weakening eastern Pacific depression are well offshore and not a mainland or Hawaii landfall problem today.
Pulse table
| Region | Main threats | SPC / NWS / WPC level | Status this morning |
|---|---|---|---|
| Eastern NE / western–central IA | Large hail, damaging wind, few tornadoes possible | SPC Slight (1300Z) | Afternoon–evening; no watch yet |
| SW / central Iowa south of I-80 | Flash flood, 3–6″ local totals | WPC Moderate excessive rainfall | Evening into Tuesday morning |
| OH / PA / WV / NY from Sunday | Trees, wires, isolated roof damage | LSRs; watches expired | Aftermath |
| Eastern CO / western–northern KS | Isolated severe gusts, high-based cells | SPC Marginal | Afternoon scatter |
| AZ / NM / SW CO | Flash flood, strong outflow | WPC Slight | Afternoon–evening cells |
| Atlantic / Gulf vs. U.S. mainland | No landfalling tropical cyclone | NHC quiet on the mainland | Quiet |
What this means for restoration teams
Eastern Nebraska this evening is hail and wind: roofs, siding, screens, and vehicles. Western and central Iowa is the dual ticket — the same storms that throw hail west of the Missouri River can train 3-plus inches of rain over Des Moines and counties southwest of I-80 after dark. A brief tornado, if one occurs, is a narrow swath. Staff it as a local damage survey, not a regional outbreak.
Sunday’s Ohio–Pennsylvania–New York wind is already on the books: tree-on-structure, service drops, and isolated roof peel. Photograph remaining damage in daylight if it is safe, then move crews toward the Nebraska–Iowa corridor rather than chasing last night’s counties unless a specific claim is already open.
What this is not
This is not a regional derecho and not a U.S. mainland hurricane landfall. The work today, if it verifies, will be scattered: a hail swath through an eastern Nebraska county, a flooded intersection south of I-80 in Iowa, leftover trees in Ohio or New York. That is the local-storm pattern this desk should staff.
Looking ahead
SPC Day 2 is a Marginal Risk as the same trough lifts toward the Upper Great Lakes. Day 3 currently carries no severe area. WPC language keeps heavy rain lingering into early Tuesday over the same Iowa footprint. Watch the afternoon Storm Tracker rather than assuming the 1300Z Slight is the last line of the day — a watch can still go up if the warm sector destabilizes as drawn.
Sources and how to verify
Primary sources: NOAA Storm Prediction Center 1300 UTC Day 1 Convective Outlook for Monday, September 14, 2026 (Gleason/Lyons); SPC current watch page (no watches valid as of 1010 UTC); SPC preliminary local storm reports for the 13/1200Z–14/1159Z window; Weather Prediction Center Day 1 Excessive Rainfall Outlook updated 0733 UTC; National Hurricane Center Atlantic and East Pacific discussions this morning.
Check weather.gov for the county warning, spc.noaa.gov for the outlook, watches, and LSRs, and WPC excessive rainfall for the flood overlay. Prior desk: Sunday afternoon, September 13 storm updates.
Informational only — not an official weather warning. Follow local authorities and the National Weather Service. Turn around, don’t drown.
