Idaho, Montana, Wyoming Severe Red Flag Warning | Effective 08/07/2026 19:50

Headline: 
Red Flag Warning issued August 7 at 8:50PM MDT until August 9 at 9:00PM MDT by NWS Riverton WY
Event: 
Red Flag Warning
Urgency: 
Expected
Effective: 
August 7, 2026 - 7:50pm
Expires: 
August 8, 2026 - 6:00am
Description: 
* AFFECTED AREA: In Central WY Fire Zones...280...283...285...300. In North Central WY Fire Zones...275...276...281...282...287. In Northwest WY Fire Zones...140...286. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Big Horn...Hot Springs...Johnson...Park ...Washakie. In Northwest WY...Yellowstone National Park. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 8 percent. Humidity recovery each night will remain below 40 percent. * TEMPERATURES: Highs in the upper 70s to middle 80s at higher elevations and middle 90s to upper 90s at lower elevations. Lows in the upper 40s to upper 50s at higher elevations and upper 50s to low 60s at lower elevations.
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: 
Yellowstone National Park; North Bighorn Basin/Worland BLM; Cody Foothills; Natrona County/Casper BLM; Johnson County/Casper BLM; South Bighorn Basin/Worland BLM; Upper Wind River Basin/Wind River Basin; South Bighorn Mountains; Absaroka Mountains/North Shoshone NF; Owl Creek Mountains; Casper Mountain
Forcast Office: 
NWS Riverton WY
Sender: 
w-nws.webmaster@noaa.gov