Resolved Aug 13, 2026 at 3:45 PM. Kept for reference.
HighFloodNWS Grand Junction CO
Flash Flood Warning
Mesa County · Started Aug 13, 2026 at 12:50 PM
Mesa Countyarea
Aug 13, 2026, 12:50 PMeffective
Aug 13, 2026, 3:45 PMexpires
NWS Grand Junction COsource
Warned area as issued by the National Weather Service
Full advisory
FFWGJTThe National Weather Service in Grand Junction has issued a
•Flash Flood Warning for...
Southwestern Mesa County in west central Colorado...•Until 345 PM MDT.
•At 1250 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain in John Brown Canyon. Between 0.5 and 1 inch of rain has fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly.HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding.SOURCE...Radar indicated.IMPACT...Flash flooding of creeks and streams, highways, county roads and underpasses/culverts.•Some locations that will experience flash flooding include...
Mainly rural areas of Southwestern Mesa County, west of Gateway, including John Brown Canyon.