Alert archive / Colorado / Red Flag Warnings in 2020

Red Flag Warning 49, NWS Pueblo, CO

September 6, 202013 counties in Colorado

NWS Pueblo, CO issued this red flag warning at Sep 6, 2020, 2:57 PM MDT for 13 counties in Colorado. It took effect at Sep 7, 2020, 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
Sep 6, 2020, 2:57 PM MDT (20:57 UTC)
In effect from
Sep 7, 2020, 11:00 AM MDT
Expired
Sep 7, 2020, 8:00 PM MDT
In force
9 hr
Issued by
NWS Pueblo, CO

Counties Alamosa County, CO, Chaffee County, CO, Conejos County, CO, Costilla County, CO, Custer County, CO, Fremont County, CO, Huerfano County, CO, Lake County, CO, Las Animas County, CO, Mineral County, CO, Pueblo County, CO, Rio Grande County, CO, Saguache County, CO

The radar

The Pueblo radar (KPUX), 144 km from the middle of the area, began a volume at 21:01 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, 9.0 hours before the alert went out and 279 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 2020-09-06Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 12:00Z on 2020-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939Sfc1 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
4269 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

402 
WWUS85 KPUB 062057
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
257 PM MDT Sun Sep 6 2020

...A Red Flag Warning is now in effect for late Monday Morning 
through Monday evening for gusty winds, low relative humidity and
dry fuels for fire weather zones 220, and 222 through 225, which 
includes the central mountains, the southwest mountains, the San 
Luis valley and the southern mountains including adjacent valley 
locations...

COZ220-222>225-071300-
/O.UPG.KPUB.FW.A.0038.200907T1700Z-200908T0200Z/
/O.NEW.KPUB.FW.W.0049.200907T1700Z-200908T0200Z/
Upper Arkansas River Valley Including Lake County and Chaffee
County-Fremont County Including Canon City/Howard/Texas Creek-
Eastern San Juan Mountains and La Garita Mountains Including Wolf
Creek Pass and Creede-
San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache-
Southern Front Range Including Sangre De Cristo Mountains/Wet
Mountains/La Veta Pass-
257 PM MDT Sun Sep 6 2020

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT MONDAY FOR
GUSTY WINDS, LOW RELATIVE HUMIDITY, AND DRY FUELS FOR FIRE 
WEATHER ZONES 220...222...223...224 AND 225...

The National Weather Service in Pueblo has issued a Red Flag
Warning for gusty winds and low relative humidity, which is in
effect from 11 AM to 8 PM MDT Monday. The Fire Weather Watch is
no longer in effect.

* Affected Area...Fire Weather Zones 220...222...223...224 and 
  225.

* Winds...West 10 to 20 mph with gusts up to 35 mph.

* Relative Humidity...As low as 8 percent.

* Temperatures...In the mid 70s.

* 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.

&&

$$
3 follow-up statements
293 
WWUS85 KPUB 070950
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
350 AM MDT Mon Sep 7 2020

...A Red Flag Warning is in effect from 11 AM this morning 
through 8 PM this evening for gusty winds, low relative humidity 
and dry fuels for fire weather zones 220, and 222 through 225, 
which includes the central mountains, the southwest mountains, the
San Luis valley and the southern mountains including adjacent 
valley locations...

COZ220-222>225-080200-
/O.CON.KPUB.FW.W.0049.200907T1700Z-200908T0200Z/
Upper Arkansas River Valley Including Lake County and Chaffee
County-Fremont County Including Canon City/Howard/Texas Creek-
Eastern San Juan Mountains and La Garita Mountains Including Wolf
Creek Pass and Creede-
San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache-
Southern Front Range Including Sangre De Cristo Mountains/Wet
Mountains/La Veta Pass-
350 AM MDT Mon Sep 7 2020

...RED FLAG WARNING IS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM 
MDT THIS EVENING FOR FIRE WEATHER ZONES 220...222...223...224 AND 
225...

* Affected Area...Fire Weather Zones 220...222...223...224 and 
  225.

* Winds...West 5 to 15 mph with gusts up to 35 mph in the
  mountains and 25 mph over the valleys.

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

* Temperatures...In the 80s valleys, 70s mountains.

* 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.

&&

$$

Hodanish
639 
WWUS85 KPUB 072220
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
420 PM MDT Mon Sep 7 2020

...A Red Flag Warning is in effect until 8 PM this evening for 
gusty winds, low relative humidity and dry fuels for fire weather 
zones 220, and 222 through 225, which includes the central 
mountains, the southwest mountains, the San Luis valley and the 
southern mountains including adjacent valley locations...

COZ220-222>225-080200-
/O.CON.KPUB.FW.W.0049.000000T0000Z-200908T0200Z/
Upper Arkansas River Valley Including Lake County and Chaffee
County-Fremont County Including Canon City/Howard/Texas Creek-
Eastern San Juan Mountains and La Garita Mountains Including Wolf
Creek Pass and Creede-
San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache-
Southern Front Range Including Sangre De Cristo Mountains/Wet
Mountains/La Veta Pass-
420 PM MDT Mon Sep 7 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR FIRE WEATHER ZONES 220...222...223...224 AND 225...

* Affected Area...Fire Weather Zones 220...222...223...224 and 
  225.

* Winds...West 10 to 20 mph with gusts up to 35 mph.

* Relative Humidity...As low as 8 percent.

* Temperatures...In the mid 70s.

* 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.

&&

$$
183 
WWUS85 KPUB 080156
RFWPUB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pueblo CO
756 PM MDT Mon Sep 7 2020

...Red Flag Warning for Fire Zones 220...222...223...224 and 225
will expire at 8 pm mdt...

COZ220-222>225-080300-
/O.EXP.KPUB.FW.W.0049.000000T0000Z-200908T0200Z/
Upper Arkansas River Valley Including Lake County and Chaffee
County-Fremont County Including Canon City/Howard/Texas Creek-
Eastern San Juan Mountains and La Garita Mountains Including Wolf
Creek Pass and Creede-
San Luis Valley Including Alamosa/Del Norte/Fort Garland/Saguache-
Southern Front Range Including Sangre De Cristo Mountains/Wet
Mountains/La Veta Pass-
756 PM MDT Mon Sep 7 2020

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR  
FIRE WEATHER ZONES 220...222...223... 224 AND 225...

Winds have decreased across the area, and relative humidity will
slowly recover to above 15 percent through the evening. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 4:36 AM MDTWinter Storm WatchPUBAlamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more24 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.