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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 9:22 AM MDT | Red Flag Warning | RIW | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 5 more | 36 hr |
| Sep 2, 12:09 PM MDT | Red Flag Warning | CYS | Converse, Goshen, Niobrara, Platte | 32 hr |
| Sep 2, 12:10 PM MDT | Red Flag Warning | BYZ | Big Horn, Johnson, Sheridan, Washakie | 33 hr |
| Sep 2, 12:22 PM MDT | Red Flag Warning | UNR | Campbell, Weston | 32 hr |
| Sep 3, 11:12 AM MDT | Red Flag Warning | RIW | Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 2 more | 34 hr |
| Sep 3, 2:19 PM MDT | Red Flag Warning | BYZ | Big Horn, Johnson, Sheridan, Washakie | 31 hr |
| Sep 3, 9:19 PM MDT | Red Flag Warning | UNR | Campbell, Crook, Weston | 23 hr |
| Sep 6, 9:40 PM MDT | Red Flag Warning | UNR | Campbell, Crook, Weston | 21 hr |
| Sep 7, 12:52 AM MDT | Red Flag Warning | RIW | Big Horn, Hot Springs, Park, Washakie | 18 hr |
| Sep 8, 12:58 AM MDT | Red Flag Warning | RIW | Fremont, Hot Springs, Johnson, Lincoln, Natrona, Park and 4 more | 68 hr |
| Sep 8, 6:44 AM MDT | Red Flag Warning | CYS | Albany, Carbon, Converse, Goshen, Niobrara, Platte | 13 hr |
| Sep 8, 8:06 PM MDT | Red Flag Warning | CYS | Albany, Carbon, Converse, Goshen, Laramie, Platte | 48 hr |
| Sep 10, 11:12 AM MDT | Red Flag Warning | UNR | Weston | 31 hr |
| Sep 10, 12:12 PM MDT | Red Flag Warning | CYS | Albany, Goshen, Laramie, Platte | 31 hr |
| Sep 13, 10:03 AM MDT | Red Flag Warning | RIW | Fremont, Natrona, Sweetwater | 34 hr |
| Sep 13, 12:57 PM MDT | Red Flag Warning | CYS | Albany, Carbon, Converse, Goshen, Niobrara, Platte | 31 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Washakie County6
- Big Horn County5
- Johnson County5
- Goshen County5
- Platte County5
- Fremont County4
- Hot Springs County4
- Natrona County4
- Park County4
- Sweetwater County4
- Converse County4
- Weston County4
- Albany County4
- Niobrara County3
- Campbell County3
- Carbon County3
- Lincoln County2
- Sublette County2
- Uinta County2
- Sheridan County2
- Crook County2
- Laramie County2
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. Warning verification from the Mesonet's Cow. Rebuilt daily.