Alert archive / Colorado / Red Flag Warnings in 2018

Red Flag Warning 23, NWS Grand Junction, CO

June 23, 20187 counties in Colorado

NWS Grand Junction, CO issued this red flag warning at Jun 23, 2018, 2:04 PM MDT for 7 counties in Colorado. It took effect at Jun 24, 2018, 11:00 AM MDT. It was in force for 9 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 23, 2018, 2:04 PM MDT (20:04 UTC)
In effect from
Jun 24, 2018, 11:00 AM MDT
Expired
Jun 24, 2018, 8:00 PM MDT
In force
9 hr
Issued by
NWS Grand Junction, CO

Counties Archuleta County, CO, Dolores County, CO, Hinsdale County, CO, La Plata County, CO, Montezuma County, CO, San Juan County, CO, San Miguel County, CO

The radar

The Grand Junction radar (KGJX), 165 km from the middle of the area, began a volume at 20:04 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 12:00Z, 8.1 hours before the alert went out and 306 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, Albuquerq/Krtlnd, NM at 12:00Z on 2018-06-23Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albuquerq/Krtlnd, NM at 12:00Z on 2018-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
4425 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 23, 10:38 AM MDT, 3 hours 26 minutes earlier.

Area forecast discussion, Jun 23, 10:38 AM MDT, 3 hours 26 minutes before
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Hazardous weather outlook, Jun 23, 1:31 PM MDT, 33 minutes before
Hazardous Weather Outlook
National Weather Service Grand Junction CO
131 PM MDT Sat Jun 23 2018

COZ001>014-017>023-UTZ022>025-027>029-241945-
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-
131 PM MDT Sat Jun 23 2018

This hazardous weather outlook is for eastern Utah and western
Colorado.

.DAY ONE...This Afternoon and Tonight

Breezy winds and low relative humidity will continue producing
critical fire weather conditions for much of eastern Utah and
western Colorado today. A Red Flag Warning remains in effect until
9 PM MDT. In addition, isolated thunderstorms are possible over
the northern and central mountains from late morning through the
early evening.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Critical fire weather conditions are expected again from late
Sunday morning through mid-evening across southwest Colorado. A
Red Flag Warning has been issued for southwest Colorado, including
Colorado fire zones 207 and 295. Scattered thunderstorms are
possible again all day Sunday over the northern and central
Colorado mountains.

Monday will be quiet with cooler temperatures, but the mercury
will be rising to well above normal levels at midweek and
critical fire weather conditions become possible once again
Thursday through Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

Nearby

Red Flag Warnings in Colorado, 2018Every red flag warning in 2018

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.