Alert archive / Colorado / Red Flag Warnings in 2021

Red Flag Warning 18, NWS Pueblo, CO

April 8, 20217 counties in Colorado

NWS Pueblo, CO issued this red flag warning at Apr 8, 2021, 8:16 PM MDT for 7 counties in Colorado. It took effect at Apr 9, 2021, 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
Apr 8, 2021, 8:16 PM MDT (02:16 UTC)
In effect from
Apr 9, 2021, 12:00 PM MDT
Expired
Apr 9, 2021, 8:00 PM MDT
In force
8 hr
Issued by
NWS Pueblo, CO

Counties Alamosa County, CO, Conejos County, CO, Costilla County, CO, Fremont County, CO, Pueblo County, CO, Rio Grande County, CO, Saguache County, CO

The radar

The Pueblo radar (KPUX), 155 km from the middle of the area, began a volume at 02:21 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 00:00Z, 2.3 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, Grand Junction, CO at 00:00Z on 2021-04-09Temperature 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, Grand Junction, CO at 00:00Z on 2021-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
4114 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

906 
WWUS85 KPUB 090216
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
816 PM MDT Thu Apr 8 2021

...Red Flag Warning for this evening has expired...

...Red Flag Warning is in effect from noon until 8 pm mdt on
Friday for Fire Weather Zones 222, 224 and 228 which includes the
San Luis Valley and Fremont and Pueblo Counties...

COZ222-224-228-091830-
/O.EXP.KPUB.FW.W.0017.000000T0000Z-210409T0200Z/
/O.UPG.KPUB.FW.A.0009.210409T1800Z-210410T0200Z/
/O.NEW.KPUB.FW.W.0018.210409T1800Z-210410T0200Z/
Fremont County Including Canon City/Howard/Texas Creek-
San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache-
Pueblo County Including Pueblo-
816 PM MDT Thu Apr 8 2021

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT FRIDAY FOR 
FOR FIRE WEATHER ZONES 222...224 AND 228...

...RED FLAG WARNING FOR THIS EVENING HAS EXPIRED...

The National Weather Service in Pueblo has issued a Red Flag
Warning for dry fuels, gusty winds and low relative humidity, 
which is in effect from noon to 8 PM MDT Friday. The Fire Weather 
Watch is no longer in effect.

* Affected Area...Fire Weather Zones 222...224 and 228.

* Winds...North to Northwest 10 to 20 mph with gusts up to 35 
  mph.

* Relative Humidity...As low as 9 percent.

* 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.

&&

$$

COZ227-229-231-232-234>237-090330-
/O.EXP.KPUB.FW.W.0017.000000T0000Z-210409T0200Z/
Southern El Paso County Including Fort Carson and Colorado
Springs-Huerfano County Including Walsenburg-
Crowley County Including Ordway-
Otero County Including La Junta and Western Comanche Grasslands-
Kiowa County Including Eads-Bent County Including Las Animas-
Prowers County Including Lamar-
Baca County Including Springfield and Eastern Comanche Grasslands-
816 PM MDT Thu Apr 8 2021

...RED FLAG WARNING HAS EXPIRED FOR FIRE WEATHER ZONES 
227...229...231...232...234...235...236 AND 237...

Winds will continue to decrease and relative humidity will rise
through the remainder of the evening. 

$$
3 follow-up statements
973 
WWUS85 KPUB 091014
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
414 AM MDT Fri Apr 9 2021

...Red Flag Warning remains in effect from noon until 8 pm mdt 
today for Fire Weather Zones 222, 224 and 228 which includes the 
San Luis Valley, and Fremont and Pueblo Counties...

COZ222-224-228-100200-
/O.CON.KPUB.FW.W.0018.210409T1800Z-210410T0200Z/
Fremont County Including Canon City/Howard/Texas Creek-
San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache-
Pueblo County Including Pueblo-
414 AM MDT Fri Apr 9 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT
THIS EVENING FOR FIRE WEATHER ZONES 222...224 AND 228...

* Affected Area...Fire Weather Zones 222...224 and 228.

* Winds...North 15 to 25 mph with gusts up to 45 mph.

* Relative Humidity...As low as 9 percent.

* 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.

&&

$$
939 
WWUS85 KPUB 092045
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
245 PM MDT Fri Apr 9 2021

...Red Flag Warning remains in effect until 8 PM MDT this evening 
for Fire Weather Zones 222, 224 and 228 which includes the San 
Luis Valley, and Fremont and Pueblo Counties...

COZ222-224-228-100200-
/O.CON.KPUB.FW.W.0018.000000T0000Z-210410T0200Z/
Fremont County Including Canon City/Howard/Texas Creek-
San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache-
Pueblo County Including Pueblo-
245 PM MDT Fri Apr 9 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR FIRE WEATHER ZONES 222...224 AND 228...

* Affected Area...Fire Weather Zones 222...224 and 228.

* Winds...North 15 to 25 mph with gusts up to 35 mph.

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

* 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.

&&

$$
462 
WWUS85 KPUB 100154
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
754 PM MDT Fri Apr 9 2021

...Red Flag Warning for this evening has expired...

COZ222-224-228-100300-
/O.EXP.KPUB.FW.W.0018.000000T0000Z-210410T0200Z/
Fremont County Including Canon City/Howard/Texas Creek-
San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache-
Pueblo County Including Pueblo-
754 PM MDT Fri Apr 9 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR FIRE
WEATHER ZONES 222...224 AND 228...

Winds will continue to decreases while humidity slowly rises
through the remainder of the evening. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 11:12 AM MDTBlowing Dust WarningPUBBent, Prowers4 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.