Alert archive / Colorado / Flash Flood Warnings in 2026
Flash Flood Warning 91, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Aug 12, 2026, 6:39 PM MDT for Rio Blanco County, Colorado. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 12, 2026, 6:39 PM MDT (00:39 UTC)
- Expired
- Aug 12, 2026, 9:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Grand Junction, CO
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Rio Blanco County, CO
The radar
The Grand Junction radar (KGJX), 102 km from the middle of the area, began a volume at 00:38 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 12:37 PM MDT | Flash Flood Watch | GJT | Gunnison, Hinsdale, Montrose, Ouray, San Miguel | 9 hr |
| Aug 13, 12:50 PM MDT | Flash Flood Warning | GJT | Mesa | 3 hr |
| Aug 13, 1:21 PM MDT | Flash Flood Warning | GJT | Rio Blanco | 3 hr |
| Aug 13, 2:12 PM MDT | Areal Flood Advisory | GJT | Delta, Montrose | 2 hr |
| Aug 13, 2:22 PM MDT | Areal Flood Advisory | GJT | Ouray | 3 hr |
| Aug 13, 2:31 PM MDT | Areal Flood Advisory | GJT | Mesa | 3 hr |
| Aug 13, 2:38 PM MDT | Areal Flood Advisory | GJT | Moffat, Rio Blanco | 3 hr |
| Aug 13, 4:38 PM MDT | Areal Flood Advisory | GJT | Garfield | 112 min |
| Aug 12, 6:15 PM MDT | Flash Flood Warning | GJT | San Juan | 3 hr |
| Aug 13, 12:36 PM MDT | Areal Flood Advisory | GJT | Grand | 3 hr |
| Aug 13, 2:47 PM MDT | Special Weather Statement | GJT | Uintah | 28 min |
Nearby
Flash Flood Warnings in Colorado, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.