United StatesSeptember 2026
National Weather Service warnings and watches: September 2026
AreaZine recorded 2,824 warnings and watches from NWS in September 2026. Nationally the NWS issued 3,688 warnings in September 2026, 76% above the average of 2,094 for September in 2008-2025, and 6,031 warnings, watches and advisories in all (IEM VTEC archive).
Which warnings did the NWS issue most in September 2026?
| Product | September 2026 | An average September, 2008-2025 |
|---|---|---|
| Severe Thunderstorm Warning | 2,242 | 970 |
| Flood Advisory | 1,371 | 992 |
| Flash Flood Warning | 876 | 426 |
| Flood Warning | 333 | 390 |
| Heat Advisory | 209 | 31 |
| Flood Watch | 167 | 45 |
| Tornado Warning | 120 | 151 |
| Dense Fog Advisory | 114 | 97 |
| Coastal Flood Advisory | 89 | 62 |
| Wind Advisory | 56 | 59 |
Source: Iowa Environmental Mesonet archive of NWS watches, warnings and advisories (VTEC). A U.S. Government work, in the public domain.
Every notice, September 2026
NWS BismarckWarningSeptember 3, 2026
Severe Thunderstorm Warning: McHenry, ND
Expired 7:45 a.m. CDT, September 3, 2026
NWS TallahasseeWarningSeptember 3, 2026
Special Marine Warning: Coastal Waters from Mexico Beach to Apalachicola out 20 NM, Coastal Waters From Ochlockonee River to Apalachicola FL out to 20 Nm, Waters from Mexico Beach to Apalachicola FL f
Expired 8:30 a.m. EDT, September 3, 2026
NWS BismarckWarningSeptember 3, 2026
Flash Flood Warning: McHenry and Ward, ND
Expired 9:30 a.m. CDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flood Warning: McKean and Warren, PA
Expired 8:45 a.m. EDT, September 3, 2026
NWS ClevelandWarningSeptember 3, 2026
Severe Thunderstorm Warning: Crawford and Erie, PA
Expired 6:30 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flood Warning: Centre, Clearfield, Huntingdon and 3 more, PA
Expired 8:00 a.m. EDT, September 3, 2026
NWS Houston/GalvestonWarningSeptember 3, 2026
Flash Flood Warning: Houston and Trinity, TX
Expired 8:30 a.m. CDT, September 3, 2026
NWS Mount HollyWarningSeptember 3, 2026
Flood Warning: New Castle, Burlington, Camden and 7 more, DE and NJ
Expired 9:15 a.m. EDT, September 3, 2026
NWS ClevelandWarningSeptember 3, 2026
Special Marine Warning: Willowick to Geneva-on-the Lake OH, Geneva-on-the-Lake to Conneaut OH and Geneva-on-the-Lake to Conneaut OH beyond 5 nm off shoreline to US-Canadian border
Expired 6:00 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flood Warning: Clinton and Lycoming, PA
Expired 7:00 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flash Flood Warning: Dauphin, Lancaster and Lebanon, PA
Expired 8:00 a.m. EDT, September 3, 2026
NWS ClevelandWarningSeptember 3, 2026
Special Marine Warning: Vermilion to Avon Point OH, Avon Point to Willowick OH, Willowick to Geneva-on-the Lake OH and 3 more
Expired 5:30 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flood Warning: Dauphin, Lebanon and Schuylkill, PA
Expired 7:00 a.m. EDT, September 3, 2026
NWS ClevelandWarningSeptember 3, 2026
Flood Warning: Erie, PA
Expired 7:30 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flood Warning: Northumberland, Snyder and Union, PA
Expired 6:00 a.m. EDT, September 3, 2026
NWS PittsburghWarningSeptember 3, 2026
Flash Flood Warning: Clarion, Forest and Jefferson, PA
Expired 6:00 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flash Flood Warning: McKean and Warren, PA
Expired 6:00 a.m. EDT, September 3, 2026
NWS BillingsWarningSeptember 3, 2026
Red Flag Warning: Northern Rosebud/Northern Treasure Counties, MT
Expired 9:00 p.m. MDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flash Flood Warning: Centre, Clearfield, Huntingdon and 3 more, PA
Expired 6:00 a.m. EDT, September 3, 2026
NWS TallahasseeWarningSeptember 3, 2026
Special Marine Warning: St. Andrews Bay Waterways, Coastal waters from Okaloosa-Walton County Line to Mexico Beach out 20 NM and Waters from Okaloosa-Walton County Line to Mexico Beach from 20 to 60 N
Expired 3:30 a.m. CDT, September 3, 2026
NWS ClevelandWarningSeptember 3, 2026
Severe Thunderstorm Warning: Ashtabula, Crawford and Erie, OH and PA
Expired 2:45 a.m. EDT, September 3, 2026
NWS Rapid CityWarningSeptember 3, 2026
Red Flag Warning: Fall River County Area, SD
Expired 8:00 p.m. MDT, September 3, 2026
NWS ClevelandWarningSeptember 3, 2026
Flash Flood Warning: Crawford and Erie, PA
Expired 5:45 a.m. EDT, September 3, 2026
NWS Mount HollyWarningSeptember 3, 2026
Flash Flood Warning: New Castle, Burlington, Camden and 6 more, DE and NJ
Expired 5:30 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Severe Thunderstorm Warning: Centre and Huntingdon, PA
Expired 2:15 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flood Warning: Snyder and Union, PA
Expired 4:00 p.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flash Flood Warning: Clinton and Lycoming, PA
Expired 5:15 a.m. EDT, September 3, 2026
NWS ChicagoWarningSeptember 3, 2026
Extreme Heat Warning: Northern Cook, Central Cook and Southern Cook, IL
Expired 7:00 p.m. CDT, September 3, 2026
NWS Houston/GalvestonWarningSeptember 3, 2026
Flood Warning: Liberty, TX
Expired 7:00 a.m. CDT, September 3, 2026
NWS Lake CharlesWarningSeptember 3, 2026
Flood Warning: Hardin, TX
Expired 7:00 a.m. CDT, September 3, 2026
NWS Houston/GalvestonWarningSeptember 3, 2026
Flash Flood Warning: Houston and Trinity, TX
Expired 3:45 a.m. CDT, September 3, 2026
NWS State CollegeWarningSeptember 3, 2026
Flood Warning: Centre, Clinton and Lycoming, PA
Expired 6:00 a.m. EDT, September 3, 2026
NWS ClevelandWarningSeptember 3, 2026
Special Marine Warning: The Islands to Vermilion OH, Vermilion to Avon Point OH, Avon Point to Willowick OH and 5 more
Expired 2:00 a.m. EDT, September 3, 2026
NWS Houston/GalvestonWarningSeptember 3, 2026
Flash Flood Warning: Trinity, TX
Expired 3:30 a.m. CDT, September 3, 2026
NWS St LouisWarningSeptember 3, 2026
Extreme Heat Warning: Madison, St. Clair, Monroe and 4 more, IL and MO
Expired 8:00 p.m. CDT, September 5, 2026
NWS St LouisWarningSeptember 3, 2026
Extreme Heat Warning: Greene, Macoupin, Montgomery and 36 more, IL and MO
Expired 8:00 p.m. CDT, September 5, 2026
NWS State CollegeWarningSeptember 3, 2026
Flash Flood Warning: Dauphin, Lebanon and Schuylkill, PA
Expired 4:00 a.m. EDT, September 3, 2026
NWS Mount HollyWarningSeptember 3, 2026
Severe Thunderstorm Warning: Kent, Caroline, Kent and 2 more, DE and MD
Expired 12:45 a.m. EDT, September 3, 2026
NWS Detroit/PontiacWarningSeptember 3, 2026
Severe Thunderstorm Warning: Wayne, MI
Expired 1:00 a.m. EDT, September 3, 2026
NWS ClevelandWarningSeptember 2, 2026
Severe Thunderstorm Warning: Erie, PA
Expired 12:45 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 2, 2026
Severe Thunderstorm Warning: Cameron, Clearfield, Clinton and 5 more, PA
Expired 12:30 a.m. EDT, September 3, 2026
NWS GlasgowWarningSeptember 2, 2026
Severe Thunderstorm Warning: Dawson, Garfield, McCone and 3 more, MT
Expired 12:45 a.m. MDT, September 3, 2026
NWS TallahasseeWarningSeptember 2, 2026
Special Marine Warning: Coastal waters from Okaloosa-Walton County Line to Mexico Beach out 20 NM, Coastal Waters from Mexico Beach to Apalachicola out 20 NM and Waters from Okaloosa-Walton County Lin
Expired 12:45 a.m. CDT, September 3, 2026
NWS ClevelandWarningSeptember 2, 2026
Flash Flood Warning: Erie, PA
Expired 3:30 a.m. EDT, September 3, 2026
NWS ClevelandWarningSeptember 2, 2026
Special Marine Warning: Geneva-on-the-Lake to Conneaut OH, Conneaut OH to Ripley NY, Geneva-on-the-Lake to Conneaut OH beyond 5 nm off shoreline to US-Canadian border and 1 more
Expired 1:00 a.m. EDT, September 3, 2026
NWS BurlingtonWarningSeptember 2, 2026
Flood Warning: Clinton, Franklin and St. Lawrence, NY
Expired 2:30 a.m. EDT, September 3, 2026
NWS Detroit/PontiacWarningSeptember 2, 2026
Flood Warning: Macomb, Oakland and Wayne, MI
Expired 5:30 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 2, 2026
Flash Flood Warning: Northumberland, Snyder and Union, PA
Expired 3:30 a.m. EDT, September 3, 2026
NWS BuffaloWarningSeptember 2, 2026
Flood Warning: Orleans, NY
Expired 11:15 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 2, 2026
Severe Thunderstorm Warning: Elk, McKean and Warren, PA
Expired 12:15 a.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 2, 2026
Severe Thunderstorm Warning: Dauphin, Northumberland, Snyder and 1 more, PA
Expired 11:30 p.m. EDT, September 2, 2026
NWS Detroit/PontiacWarningSeptember 2, 2026
Severe Thunderstorm Warning: Macomb, MI
Expired 11:45 p.m. EDT, September 2, 2026
NWS Detroit/PontiacWarningSeptember 2, 2026
Severe Thunderstorm Warning: Washtenaw and Wayne, MI
Expired 12:00 a.m. EDT, September 3, 2026
NWS Houston/GalvestonWarningSeptember 2, 2026
Flood Warning: Polk and San Jacinto, TX
Expired 4:45 a.m. CDT, September 3, 2026
NWS GlasgowWarningSeptember 2, 2026
Severe Thunderstorm Warning: Dawson, Garfield, McCone and 4 more, MT
Expired 11:45 p.m. MDT, September 2, 2026
NWS Houston/GalvestonWarningSeptember 2, 2026
Flood Warning: Liberty, Polk and San Jacinto, TX
Expired 4:15 a.m. CDT, September 3, 2026
NWS State CollegeWarningSeptember 2, 2026
Severe Thunderstorm Warning: Warren, PA
Expired 11:15 p.m. EDT, September 2, 2026
NWS Detroit/PontiacWarningSeptember 2, 2026
Special Marine Warning: St. Clair River, Detroit River and Lake St. Clair Open Lake (U.S. Portion)
Expired 12:00 a.m. EDT, September 3, 2026
NWS BinghamtonWarningSeptember 2, 2026
Flash Flood Warning: Steuben, NY
Expired 1:15 a.m. EDT, September 3, 2026
NWS ClevelandWarningSeptember 2, 2026
Special Marine Warning: Geneva-on-the-Lake to Conneaut OH, Conneaut OH to Ripley NY, Geneva-on-the-Lake to Conneaut OH beyond 5 nm off shoreline to US-Canadian border and 1 more
Expired 11:45 p.m. EDT, September 2, 2026
Source: National Weather Service alerts (api.weather.gov).