NWS / NOAA weather: Flash Flood Warning issued July 4 at 3:18AM MDT until July 4 at 4:15AM MDT by NWS Denver CO

At 318 AM MDT, Doppler radar indicated thunderstorms produced heavy
rain across the warned area earlier tonight. Local law enforcement
reported Flash flooding was occurring along Highway 61 between County
Roads 4 and 8 in Washington county. Between 2.5 and 3.5 inches of
rain fell earlier. Flooding impacts will continue, as additional
rainfall amounts of 0.1 to 0.5 inches are possible in the warned area
for the next 30 mins. Therefore the warning was extended for one
hour.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flash flooding of small creeks and streams, gulches, roads,
and poor drainage and low-lying areas.

Some locations that will experience flash flooding include...
Thurman.

This includes the following streams and drainages...
North Fork Arikaree River, Dugout Creek, Hell Creek, Gordon Creek
and Arikaree River.

Source: NWS / NOAA weather.