Alert archive / Colorado / Red Flag Warnings in 2023

Red Flag Warning 3, NWS Grand Junction, CO

June 21, 20236 counties in Colorado

NWS Grand Junction, CO issued this red flag warning at Jun 21, 2023, 2:15 PM MDT for 6 counties in Colorado. It took effect at Jun 22, 2023, 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 21, 2023, 2:15 PM MDT (20:15 UTC)
In effect from
Jun 22, 2023, 12:00 PM MDT
Expired
Jun 22, 2023, 8:00 PM MDT
In force
8 hr
Issued by
NWS Grand Junction, CO

Counties Delta County, CO, Garfield County, CO, Mesa County, CO, Montrose County, CO, Ouray County, CO, San Miguel County, CO

The radar

The Grand Junction radar (KGJX), 44 km from the middle of the area, began a volume at 20:11 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, 8.3 hours before the alert went out and 61 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.

Skew-T log-pSkew-T log-p diagram, Grand Junction, CO at 12:00Z on 2023-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 12:00Z on 2023-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3430 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Grand Junction, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 21, 1:10 AM MDTFire Weather WatchGJTGarfield, Mesa13 hr
Jun 21, 1:10 AM MDTFire Weather WatchGJTGarfield, Mesa13 hr
Jun 21, 2:15 PM MDTFire Weather WatchGJTDolores, La Plata, Montezuma, Montrose, San Miguel12 hr
Jun 21, 2:15 PM MDTFire Weather WatchGJTDolores, La Plata, Montezuma, Montrose, San Miguel24 hr
Jun 21, 2:15 PM MDTRed Flag WarningGJTDelta, Dolores, Garfield, La Plata, Mesa, Montezuma and 3 more55 hr

Nearby

Red Flag Warnings in Colorado, 2023Every red flag warning in 2023

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.