Alert archive / Colorado / Red Flag Warnings in 2020
Red Flag Warning 33, NWS Grand Junction, CO
NWS Grand Junction, CO issued this red flag warning at Jun 29, 2020, 9:11 PM MDT for 4 counties in Colorado. It took effect at Jun 30, 2020, 12:00 PM MDT. It was in force for 8 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 29, 2020, 9:11 PM MDT (03:11 UTC)
- In effect from
- Jun 30, 2020, 12:00 PM MDT
- Expired
- Jun 30, 2020, 8:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Grand Junction, CO
Counties Archuleta County, CO, Hinsdale County, CO, La Plata County, CO, San Juan County, CO
The radar
The Grand Junction radar (KGJX), 184 km from the middle of the area, began a volume at 03:13 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
Albuquerq/Krtlnd, NM (KABQ), launched 00:00Z, 3.2 hours before the alert went out and 285 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
- 4317 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this red flag 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 red flag warning went out at Jun 29, 6:03 PM MDT, 3 hours 8 minutes earlier.
Area forecast discussion, Jun 29, 6:03 PM MDT, 3 hours 8 minutes before
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</html>Hazardous weather outlook, Jun 29, 4:32 AM MDT, 16 hours 39 minutes before
Hazardous Weather Outlook National Weather Service Grand Junction CO 432 AM MDT Mon Jun 29 2020 COZ001>014-017>023-UTZ022>025-027>029-301200- 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- 432 AM MDT Mon Jun 29 2020 This hazardous weather outlook is for eastern Utah and western Colorado. .DAY ONE...Today and Tonight A cold front will move through later this evening and overnight. Until then, gusty southwesterly will occasionally reach 45 to 50 mph at times. A wind advisory is in place as are some Red Flag Warnings due to critical fire weather conditions being met. Scattered showers and thunderstorms will accompany frontal passage this afternoon and evening with the biggest concern being strong outflow winds. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Much cooler temperatures move in Tuesday with the next chance for precipitation being Friday as moisture looks to increase from the south. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 1:51 PM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 30 hr |
Nearby
Red Flag Warnings in Colorado, 2020Every red flag warning in 2020
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.