Alert archive / Colorado / Flash Flood Warnings in 2024
Flash Flood Warning 4, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Jun 22, 2024, 4:56 PM MDT for Montrose County, Colorado. It was in force for 2 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
- Jun 22, 2024, 4:56 PM MDT (22:56 UTC)
- Expired
- Jun 22, 2024, 7:00 PM MDT
- In force
- 2 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 22:55 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, 10.9 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
- 15 J/kg
- Mixed-layer CIN
- -450 J/kg
- Mixed-layer LCL
- 1395 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 200 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 Jun 22, 2:06 PM MDT, 2 hours 50 minutes earlier.
Area forecast discussion, Jun 22, 2:06 PM MDT, 2 hours 50 minutes before
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</html>Hazardous weather outlook, Jun 22, 4:57 AM MDT, 11 hours 59 minutes before
Hazardous Weather Outlook National Weather Service Grand Junction CO 457 AM MDT Sat Jun 22 2024 COZ001>014-017>023-UTZ022>025-027>029-231100- Lower Yampa River Basin-Central Yampa River Basin- Roan and Tavaputs Plateaus-Elkhead and Park Mountains- Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor- Central Colorado River Basin-Grand and Battlement Mesas- Gore and Elk Mountains/Central Mountain Valleys- Central Gunnison and Uncompahgre River Basin- West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley- Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains- Southwest San Juan Mountains-Paradox Valley/Lower Dolores River- Four Corners/Upper Dolores River-Animas River Basin- San Juan River Basin-Southeast Utah-Eastern Uinta Mountains- Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat- La Sal and Abajo Mountains-Canyonlands/Natural Bridges- 457 AM MDT Sat Jun 22 2024 This Hazardous Weather Outlook is for northwest Colorado, southwest Colorado, west central Colorado, east central Utah, northeast Utah and southeast Utah. .DAY ONE...Today and tonight. The probability for widespread hazardous weather is low, though isolated heavy rain producing thunderstorms are possible from late morning through midafternoon. Showers and thunderstorms will be less widespread with the mountains favored. Thunderstorms are expected to dissipate by sunset. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Thunderstorms become more scattered in coverage with a significantly reduced threat for heavy rain or severe storms. Afternoon/evening thunderstorms, more isolated in coverage, can be expected Sunday through Tuesday. Storm coverage increases again for the latter part of next week. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Jun 22, 2:05 PM MDT, 2 hours 51 minutes before
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</html>Local storm report, Jun 22, 2:27 PM MDT, 2 hours 29 minutes before
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</html>Local storm report, Jun 22, 2:55 PM MDT, 2 hours 1 minute before
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</html>Special weather statement, Jun 22, 3:33 PM MDT, 1 hour 23 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 |
|---|---|---|---|---|
| Jun 21, 6:04 PM MDT | Special Weather Statement | GJT | San Miguel | 26 min |
| Jun 21, 6:14 PM MDT | Severe Thunderstorm Warning | GJT | Mesa, Montrose | 16 min |
| Jun 21, 6:27 PM MDT | Severe Thunderstorm Warning | GJT | Mesa, Montrose | 33 min |
| Jun 21, 6:28 PM MDT | Special Weather Statement | GJT | Mesa | 32 min |
| Jun 21, 6:45 PM MDT | Special Weather Statement | GJT | Garfield | 30 min |
| Jun 21, 6:50 PM MDT | Special Weather Statement | GJT | Routt | 25 min |
| Jun 21, 6:57 PM MDT | Special Weather Statement | GJT | Montrose | 33 min |
| Jun 21, 10:48 PM MDT | Special Weather Statement | GJT | La Plata | 27 min |
| Jun 22, 12:03 PM MDT | Special Weather Statement | GJT | 27 min | |
| Jun 22, 1:20 PM MDT | Flash Flood Warning | GJT | Rio Blanco | 115 min |
| Jun 22, 1:22 PM MDT | Special Weather Statement | GJT | Rio Blanco | 23 min |
| Jun 22, 1:42 PM MDT | Severe Thunderstorm Warning | GJT | Rio Blanco | 33 min |
| Jun 22, 2:02 PM MDT | Special Weather Statement | GJT | Rio Blanco | 28 min |
| Jun 22, 2:05 PM MDT | Special Weather Statement | GJT | Routt | 25 min |
| Jun 22, 2:31 PM MDT | Special Weather Statement | GJT | Montrose | 29 min |
| Jun 22, 3:03 PM MDT | Severe Thunderstorm Warning | GJT | Mesa, Montrose | 27 min |
| Jun 22, 3:33 PM MDT | Special Weather Statement | GJT | Archuleta | 27 min |
| Jun 22, 5:16 PM MDT | Flash Flood Warning | GJT | Eagle, Garfield, Pitkin | 34 min |
| Jun 21, 7:21 PM MDT | Areal Flood Advisory | GJT | Grand | 10 min |
| Jun 21, 7:31 PM MDT | Flash Flood Warning | GJT | Grand | 2 hr |
| Jun 22, 12:20 PM MDT | Areal Flood Advisory | GJT | Uintah | 55 min |
| Jun 22, 2:41 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 34 min |
| Jun 22, 3:13 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 8 min |
Nearby
Flash Flood Warnings in Colorado, 2024Every flash flood warning in 2024
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.