Flash Flood Watch issued for much of Western and Central Wyoming

(Riverton, Wyo.) The National Weather Service Forecast Office in Riverton has issued a flash flood watch for over a wide area in Western, Central and North Central Wyoming this afternoon as slow moving thunderstorms with heavy rainfall are predicted to move across the area this afternoon and tonight.

The NWS statement is copied below:

Slow moving thunderstorms will have plenty of moisture to work with today, nearly twice the normal amount. Heavier thunderstorms could drop one to two inches of rain in a very short period of time. Those who live near burn scars or downstream of small flashy creeks and dry washes are urged to be on the lookout for warnings. The Back Edge of the more moist air will move through late tonight so these storms could deliver heavy rainfall through about midnight. High elevation rainfall may take several hours to travel into inhabited areas so the watch will remain in effect until 3am.

Flash Flood Watch in effect through late tonight.

The National Weather Service in Riverton has issued a Flash Flood Watch for portions of Central Wyoming, North Central Wyoming, South Central Wyoming, Southwest Wyoming and West Central Wyoming, including the following areas, in Central Wyoming, Casper Mountain, Green Mountains and Rattlesnake range, Lander foothills, Natrona County lower elevations, Owl Creek and Bridger Mountains, Upper Wind River basin, Wind River basin, Wind River Mountains east and Wind River Mountains west. In North Central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains west, northeast Johnson County and Southeast Johnson County. In South Central Wyoming, East Sweetwater County, Flaming Gorge and Rock Springs and Green River. In Southwest Wyoming, South Lincoln County. In West Central Wyoming, Salt River and Wyoming Ranges, Star Valley, Upper Green River Basin and Upper Green River Basin foothills.

Through late tonight:

  • Slow moving thunderstorms with heavy rain could cause flooding today and tonight.
  • Areas of central and southern Wyoming could see Flash Flooding today and tonight, especially in small creeks and in urban areas. Flooding could occur after dark, please do not drive into flood waters and report any flooding to the National Weather Service and local law enforcement.

Recommended actions

A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash Flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.