Alert archive / Wyoming / Red Flag Warnings / 2026

Red Flag Warnings in Wyoming, September 2026

16 red flag warnings in September 2026. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of red flag warnings reaches back to 2005.

Red Flag Warnings by county

Each county as a circle sized by its count in September 2026. Tap one for its archive.

Red Flag Warnings
16
Busiest day
September 2, 20264 red flag warnings

Over time

By day

Days in UTC, the clock the archive keeps.

The alerts

Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Sep 2, 9:22 AM MDTRed Flag WarningRIWBig Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 5 more36 hr
Sep 2, 12:09 PM MDTRed Flag WarningCYSConverse, Goshen, Niobrara, Platte32 hr
Sep 2, 12:10 PM MDTRed Flag WarningBYZBig Horn, Johnson, Sheridan, Washakie33 hr
Sep 2, 12:22 PM MDTRed Flag WarningUNRCampbell, Weston32 hr
Sep 3, 11:12 AM MDTRed Flag WarningRIWBig Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 2 more34 hr
Sep 3, 2:19 PM MDTRed Flag WarningBYZBig Horn, Johnson, Sheridan, Washakie31 hr
Sep 3, 9:19 PM MDTRed Flag WarningUNRCampbell, Crook, Weston23 hr
Sep 6, 9:40 PM MDTRed Flag WarningUNRCampbell, Crook, Weston21 hr
Sep 7, 12:52 AM MDTRed Flag WarningRIWBig Horn, Hot Springs, Park, Washakie18 hr
Sep 8, 12:58 AM MDTRed Flag WarningRIWFremont, Hot Springs, Johnson, Lincoln, Natrona, Park and 4 more68 hr
Sep 8, 6:44 AM MDTRed Flag WarningCYSAlbany, Carbon, Converse, Goshen, Niobrara, Platte13 hr
Sep 8, 8:06 PM MDTRed Flag WarningCYSAlbany, Carbon, Converse, Goshen, Laramie, Platte48 hr
Sep 10, 11:12 AM MDTRed Flag WarningUNRWeston31 hr
Sep 10, 12:12 PM MDTRed Flag WarningCYSAlbany, Goshen, Laramie, Platte31 hr
Sep 13, 10:03 AM MDTRed Flag WarningRIWFremont, Natrona, Sweetwater34 hr
Sep 13, 12:57 PM MDTRed Flag WarningCYSAlbany, Carbon, Converse, Goshen, Niobrara, Platte31 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

Nearby

Alerts in force nowTornadoes on recordThe radar archive2025

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. Warning verification from the Mesonet's Cow. Rebuilt daily.