Severe · Flash Flood WarningThis alert has expired. It is kept for reference.
Flash Flood Warning issued September 19 at 7:29PM MDT until September 19
Affecting Fremont, WY
In effect until: Sep 20, 2026, 3:30 AM
Fremont, WY
Likely impact in Fremont, WY; effects through 3:30 AM.
Get to higher ground now. Never drive through flooded roads.
Read the original bulletin (official text)
At 729 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Mainly rural areas of Southern Fremont County near Lyons Valley. This includes the following streams and drainages... Little Popo Agie River, Grant Young Ditch, Monument Draw, North Fork Ballenger Draw, Popo Agie River and Government Draw.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™