A Flood Watch remains in effect through late Wednesday night for much of northwest Wyoming, including Park, Big Horn, Hot Springs and Washakie counties, as slow-moving thunderstorms and abundant moisture increase the potential for heavy rainfall.
According to the National Weather Service in Riverton, the greatest threat for flooding is expected Wednesday afternoon through Wednesday evening, when showers and thunderstorms could produce locally heavy rain capable of causing flooding.
The watch includes Yellowstone National Park and communities throughout the Bighorn Basin, including Cody, Powell, Meeteetse, Clark, Lovell, Greybull, Basin, Worland, Ten Sleep, Thermopolis and Shell.
Forecasters say excessive rainfall could lead to flooding of rivers, creeks, streams and other low-lying or flood-prone areas. Slow-moving thunderstorms combined with unusually high atmospheric moisture may produce periods of intense rainfall capable of overwhelming drainage systems.
Residents living in areas prone to flooding are encouraged to monitor the latest forecasts and be prepared to take action if Flood Warnings are issued. Drivers should never attempt to cross flooded roadways, as water depths and roadway conditions can change rapidly.
A Flood Watch means conditions are favorable for flooding to develop but does not mean flooding is occurring. The National Weather Service urges residents to stay weather aware throughout the day as conditions evolve.