Alert archive / Colorado / Flash Flood Warnings in 2022
Flash Flood Warning 28, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Aug 4, 2022, 3:06 PM MDT for Montrose 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 4, 2022, 3:06 PM MDT (21:06 UTC)
- Expired
- Aug 4, 2022, 6:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Grand Junction, CO
- Area
- Storm-based polygon
- Flood severity
- None
County Montrose County, CO
The radar
The Grand Junction radar (KGJX), 74 km from the middle of the area, began a volume at 21:09 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 12:00Z, 9.1 hours before the alert went out and 83 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2526 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Junction, CO wrote its last area forecast discussion before this flash flood warning went out at Aug 3, 5:35 PM MDT, 21 hours 31 minutes earlier.
Area forecast discussion, Aug 3, 5:35 PM MDT, 21 hours 31 minutes before
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</html>The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 6:11 PM MDT | Areal Flood Advisory | GJT | Archuleta | 96 min |
| Aug 3, 6:54 PM MDT | Areal Flood Advisory | GJT | San Miguel | 3 hr |
| Aug 4, 1:34 PM MDT | Areal Flood Advisory | GJT | San Miguel | 19 min |
| Aug 4, 1:53 PM MDT | Flash Flood Warning | GJT | San Miguel | 3 hr |
| Aug 4, 2:45 PM MDT | Flash Flood Warning | GJT | San Miguel | 2 hr |
| Aug 4, 3:34 PM MDT | Flash Flood Warning | GJT | Dolores, San Miguel | 3 hr |
| Aug 4, 4:11 PM MDT | Flash Flood Warning | GJT | Archuleta, Hinsdale, La Plata | 3 hr |
| Aug 4, 4:37 PM MDT | Flash Flood Warning | GJT | Dolores, Montezuma | 3 hr |
Nearby
Flash Flood Warnings in Colorado, 2022Every flash flood warning in 2022
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.