Alert archive / Colorado / Red Flag Warnings in 2021

Red Flag Warning 54, NWS Pueblo, CO

December 22, 2021Huerfano County, Colorado

NWS Pueblo, CO issued this red flag warning at Dec 22, 2021, 5:01 PM MST for Huerfano County, Colorado. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 22, 2021, 5:01 PM MST (00:01 UTC)
Expired
Dec 22, 2021, 7:00 PM MST
In force
119 min
Issued by
NWS Pueblo, CO

County Huerfano County, CO

The radar

The Pueblo radar (KPUX), 110 km from the middle of the area, began a volume at 00:06 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

Denver, CO (KDNR), launched 00:00Z, 0.0 hours before the alert went out and 286 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, Denver, CO at 00:00Z on 2021-12-23Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2021-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.1939587897117Sfc1 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
4498 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

191 
WWUS85 KPUB 230001
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
501 PM MST Wed Dec 22 2021

...A Red Flag Warning has been extended until 7 PM today for gusty 
winds and low relative humidity for fire weather zones 229 which 
includes Huerfano County...

COZ229-230200-
/O.EXP.KPUB.FW.W.0053.000000T0000Z-211223T0000Z/
/O.NEW.KPUB.FW.W.0054.211223T0001Z-211223T0200Z/
Huerfano County Including Walsenburg-
501 PM MST Wed Dec 22 2021

...RED FLAG WARNING IN EFFECT UNTIL 7 PM MST THIS EVENING FOR
GUSTY WINDS, LOW RELATIVE HUMDITY, AND DRY FUELS FOR FIRE WEATHER
ZONE 229... ...RED FLAG WARNING HAS EXPIRED FOR |GUSTY WINDS, LOW
RELATIVE HUMDITY, AND DRY FUELS FOR FIRE WEATHER ZONE 229...

The National Weather Service in Pueblo has issued a Red Flag
Warning for gusty winds, low relative humidity, and dry fuels, 
which is in effect until 7 PM MST this evening.

* Affected Area...Fire Weather Zone 229.

* Winds...West 15 to 20 mph with gusts up to 30 mph.

* Relative Humidity...As low as 7 percent.

* Temperatures...Around 50.

* Impacts...Conditions will be favorable for rapid rates of fire 
  growth and spread.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

COZ221-222-230115-
/O.EXP.KPUB.FW.W.0053.000000T0000Z-211223T0000Z/
Teller County/Rampart Range Including Pikes Peak and Florissant
Fossil Beds National Monument-
Fremont County Including Canon City/Howard/Texas Creek-
501 PM MST Wed Dec 22 2021

...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS, LOW RELATIVE
HUMDITY, AND DRY FUELS  FOR FIRE WEATHER ZONES 221 AND 222...

Winds have calmed below Red Flag Warning threshold, there for the
Red Flag Warning has been allowed to expire.

$$
1 follow-up statement
375 
WWUS85 KPUB 230150
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
650 PM MST Wed Dec 22 2021


COZ229-230300-
/O.EXP.KPUB.FW.W.0054.000000T0000Z-211223T0200Z/
Huerfano County Including Walsenburg-
650 PM MST Wed Dec 22 2021

...RED FLAG WARNING WILL EXPIRE AT 7 PM MST THIS EVENING FOR GUSTY
WINDS, LOW RELATIVE HUMIDITY, AND DRY FUELS FOR FIRE WEATHER ZONE
229...

Isolated critical fire weather conditions are still ongoing over 
Huerfano County, but the spatial extent does not warrant the 
continuation of a Red Flag Warning. In fact, near critical fire 
weather conditions will likely continue near the foothills of the 
southern Sangre de Cristo Mountains throughout the overnight, but 
RH values will increase over 15%. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 23, 4:02 AM MSTHigh Wind WarningPUBAlamosa, Bent, Chaffee, Costilla, Custer, El Paso and 7 more38 hr

Nearby

Red Flag Warnings in Colorado, 2021Every red flag warning in 2021

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.