Wyoming Severe Flash Flood Warning | Effective 07/18/2026 16:46

Headline: 
Flash Flood Warning issued July 18 at 5:46PM MDT until July 18 at 7:30PM MDT by NWS Billings MT
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 18, 2026 - 4:46pm
Expires: 
July 18, 2026 - 6:30pm
Description: 
At 546 PM MDT, Thunderstorms have produced heavy rain over the Northern Elk Burn Area. Between 0.8 and 1.5 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow. The debris flow can consist of rock, mud, vegetation and other loose materials. HAZARD...Flash flooding caused by thunderstorms in and around the Northern Elk Burn Area. SOURCE...Radar indicated. IMPACT...Flooding of areas in and downstream of the Northern Elk Burn Area. Some locations that will experience flash flooding include... Dayton and Parkman.
Instruction: 
Life threatening flooding of creeks, roads, and normally dry coulees in and downstream of the Northern Elk burn area is likely. In addition to the flash flooding, the heavy rains may trigger rockslides, mudslides, and debris flows in steep terrain. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Roads and driveways may be damaged or washed out in places.
Area Description: 
Sheridan, WY
Forcast Office: 
NWS Billings MT
Sender: 
w-nws.webmaster@noaa.gov