Montana, Wyoming Fire Weather Watch | Effective 04/21/2026 00:23

Headline: 
Fire Weather Watch issued April 21 at 1:23AM MDT until April 22 at 8:00PM MDT by NWS Riverton WY
Event: 
Fire Weather Watch
Urgency: 
Future
Effective: 
April 21, 2026 - 12:23am
Expires: 
April 21, 2026 - 5:00pm
Description: 
The National Weather Service in Riverton has issued a Fire Weather Watch, which is in effect from late Wednesday morning through Wednesday evening. * IMPACTS: Low Humidities and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...283...285...289...300. In North Central WY Fire Zones...275...276...281...282...287. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Big Horn...Hot Springs...Johnson...Park Washakie. In Southwest WY...Sweetwater. * WIND: Southwest 25 to 35 mph with gusts up to 55 mph. * HUMIDITY: As low as 10 to 15 percent. * ADDITIONAL DETAILS: While wind will not be as strong as on Wednesday, elevated to near critical fire weather conditions will be seen today across much of the same area.
Instruction: 
A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Area Description: 
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; Owl Creek Mountains; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain
Forcast Office: 
NWS Riverton WY
Sender: 
w-nws.webmaster@noaa.gov