Wyoming Severe Red Flag Warning | Effective 10/04/2026 10:31

Headline: 
Red Flag Warning issued October 4 at 11:31AM MDT until October 5 at 6:00PM MDT by NWS Riverton WY
Event: 
Red Flag Warning
Urgency: 
Expected
Effective: 
October 4, 2026 - 10:31am
Expires: 
October 5, 2026 - 4:45am
Description: 
The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon to 6 PM MDT Monday. the Fire Weather Watch is no longer in effect. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289...300. In Southwest WY Fire Zone....279. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater. * WIND: West 10 to 15 mph with gusts of 30 to 35 mph. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in the low to mid 80s.
Instruction: 
A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
Area Description: 
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA; Natrona County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain
Forcast Office: 
NWS Riverton WY
Sender: 
w-nws.webmaster@noaa.gov