NWS Grand Junction COFF.W 0104September 2, 2026
Flash Flood Warning: Mesa, CO
The National Weather Service office in Grand Junction issued a flash flood warning for Mesa in Colorado, which was in force until 3:30 p.m. local time on September 2. It was the 104th flash flood warning the NWS office in Grand Junction issued in 2026. Colorado had 31 flash flood warnings in September 2026, against 8 in an average September of 2008-2025 (Colorado's flash flood warnings by year).
ExpiredWarning
In force for 2.9 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Grand Junction CO
- Area
- Mesa
- State
- Colorado
- Level
- Warning
- Issued
- 12:37 p.m. MDT, September 2, 2026
- Expires
- 3:30 p.m. MDT, September 2, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KGJT FF.W 0104
- Official source
- National Weather Service: the notice at its source
Flash Flood Warnings in Colorado since 2008Every warning type in Colorado
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWGJT The National Weather Service in Grand Junction has issued a * Flash Flood Warning for... West Central Mesa County in west central Colorado... * Until 330 PM MDT. * At 1237 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. The expected rainfall rate is 1 to 3 inches in 1 hour. Additional rainfall amounts of 0.2 to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Flash flooding of creeks, arroyos, and streams, streets and underpasses. * Some locations that will experience flash flooding include... Grand Junction, Fruita and Colorado National Monument. This includes the following streams and drainages... Devils Canyon, Monument Canyon, and Wedding Canyon
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. Immediately climb to higher ground. Runoff concentrated through narrow canyon walls can quickly become dangerous, life threatening conditions.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.
The record around this notice
- Flash Flood Warnings in Colorado since 2008116 a year
- Every warning type in Colorado
- Flash Flood Warning: what it means, and the states that get the most3,924 a year
- NWS notices, September 20262,824 in the month
- The latest from the National Weather Service
- Warning, watch or advisory: the three NWS levels