Alert archive / Red Flag Warnings / 2026
Red Flag Warnings in the United States, September 2026
42 red flag warnings in September 2026. Each alert counts once, however many counties it covered. The last few weeks are still filling in as offices finish their follow-ups. The archive of red flag warnings reaches back to 2005.
Red Flag Warnings by state
Each state shaded by its count. Tap a state for its own archive.
- Red Flag Warnings
- 42
- Busiest day
- September 11, 20268 red flag warnings
Over time
By day
Days in UTC, the clock the archive keeps.
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Colorado210
- Nebraska147
- Texas132
- Wyoming108
- Kansas106
- New Mexico82
- Oklahoma75
- South Dakota71
- Oregon55
- Idaho54
- Minnesota54
- California49
- Washington48
- Montana48
- Utah44
- Florida32
- Nevada30
- Georgia30
- Iowa29
- Arizona28
- Alaska27
- North Dakota26
- Missouri17
- Louisiana12
- Alabama11
- Mississippi11
- Illinois9
- Michigan6
- South Carolina5
- Arkansas5
- Puerto Rico5
- Wisconsin4
- New York3
- U.S. Virgin Islands2
- West Virginia1
- Virginia1
- Kentucky1
- North Carolina1
- Vermont1
Nearby
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.