8/12/2025 1:14:00 PM until 8/13/2025 6:00:00 AM

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.

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Wednesday. * IMPACTS: Low Humidities...Hot Temperatures...Strong Gusty Winds...and Increasing Thunderstorm Activity could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zone....288. In Northwest WY Fire Zone....286. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park. In West Central WY...Sublette. * WIND: West 15 to 25 mph with gusts 30 to 40 mph. * THUNDERSTORMS: There is a 20 to 30 percent chance of thunderstorms, with gusty winds and frequent lightning being the main threats. * HUMIDITY: Higher elevations will see RHs around 20 percent, however lower valleys will see RHs near 15 percent Wednesday afternoon. * TEMPERATURES: Highs in the upper 70s.