Alert archive / Utah / Flash Flood Warnings in 2026
Flash Flood Warning 73, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Jul 28, 2026, 6:31 PM MDT for San Juan County, Utah. 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
- Jul 28, 2026, 6:31 PM MDT (00:31 UTC)
- Expired
- Jul 28, 2026, 9:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Grand Junction, CO
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County San Juan County, UT
The radar
The Grand Junction radar (KGJX), 212 km from the middle of the area, began a volume at 00:32 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 nearest sounding before it
Grand Junction, CO (KGJT), launched 00:00Z, 0.5 hours before the alert went out and 202 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 768 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 3147 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 7:36 PM MDT | Areal Flood Advisory | GJT | Montrose, San Miguel | 3 hr |
| Jul 28, 7:39 PM MDT | Flash Flood Warning | GJT | Dolores | 4 hr |
| Jul 28, 8:14 PM MDT | Areal Flood Advisory | GJT | Montrose | 2 hr |
| Jul 28, 9:23 PM MDT | Areal Flood Advisory | GJT | Gunnison, Hinsdale, Ouray | 5 hr |
| Jul 29, 1:49 PM MDT | Flash Flood Warning | GJT | Rio Blanco | 56 min |
| Jul 29, 3:07 PM MDT | Areal Flood Advisory | GJT | Ouray | 24 min |
| Jul 29, 3:31 PM MDT | Flash Flood Warning | GJT | Ouray | 5 hr |
| Jul 29, 3:51 PM MDT | Flash Flood Warning | GJT | Ouray | 4 hr |
| Jul 29, 3:55 PM MDT | Flash Flood Warning | GJT | Ouray, San Juan, San Miguel | 3 hr |
| Jul 29, 3:58 PM MDT | Areal Flood Advisory | GJT | Garfield | 4 hr |
| Jul 29, 4:08 PM MDT | Areal Flood Advisory | GJT | Hinsdale | 3 hr |
| Jul 29, 4:20 PM MDT | Special Weather Statement | GJT | Mesa | 25 min |
| Jul 29, 5:34 PM MDT | Special Weather Statement | GJT | Rio Blanco | 26 min |
| Jul 28, 9:03 PM MDT | Areal Flood Advisory | GJT | Grand, San Juan | 3 hr |
| Jul 28, 10:27 PM MDT | Flash Flood Warning | GJT | Grand | 3 hr |
| Jul 29, 4:48 PM MDT | Special Weather Statement | GJT | Grand | 27 min |
| Jul 29, 5:19 PM MDT | Flash Flood Warning | GJT | Grand | 3 hr |
| Jul 29, 5:20 PM MDT | Special Weather Statement | GJT | Grand | 40 min |
| Jul 29, 5:29 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 31 min |
| Jul 29, 5:44 PM MDT | Flash Flood Warning | GJT | Grand | 3 hr |
| Jul 29, 5:59 PM MDT | Special Weather Statement | GJT | San Juan | 31 min |
Nearby
Flash Flood Warnings in Utah, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.