Alert archive / Colorado / Red Flag Warnings in 2021
Red Flag Warning 9, NWS Pueblo, CO
NWS Pueblo, CO issued this red flag warning at Mar 11, 2021, 10:20 AM MST for Las Animas County, Colorado. It took effect at Mar 11, 2021, 11:00 AM MST. It was in force for 7 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
- Mar 11, 2021, 10:20 AM MST (17:20 UTC)
- In effect from
- Mar 11, 2021, 11:00 AM MST
- Expired
- Mar 11, 2021, 5:56 PM MST
- In force
- 7 hr
- Issued by
- NWS Pueblo, CO
County Las Animas County, CO
The radar
The Pueblo radar (KPUX), 128 km from the middle of the area, began a volume at 17:18 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 12:00Z, 5.3 hours before the alert went out and 293 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1177 m above ground
- 0-6 km bulk shear
- 93 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
836 WWUS85 KPUB 111720 RFWPUB URGENT - FIRE WEATHER MESSAGE National Weather Service Pueblo CO 1020 AM MST Thu Mar 11 2021 ...A Red Flag Warning has been issued from 11 AM until 7 PM today for gusty winds and low relative humidity values for fire weather zones 230 and 233...which includes Las Animas county... COZ230-233-120200- /O.NEW.KPUB.FW.W.0009.210311T1800Z-210312T0200Z/ Western Las Animas County Including Trinidad and Thatcher- Eastern Las Animas County Including Pinon Canyon- 1020 AM MST Thu Mar 11 2021 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MST THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY VALUES FOR FIRE WEATHER ZONES 230 AND 233... The National Weather Service in Pueblo has issued a Red Flag Warning for gusty winds and low relative humidity values, which is in effect until 7 PM MST this evening. * Affected Area...Fire Weather Zones 230 and 233. * Winds...Southwest 15 to 25 mph with gusts up to 30 mph. * Relative Humidity...As low as 10 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. && $$
2 follow-up statements
894 WWUS85 KPUB 112132 RFWPUB URGENT - FIRE WEATHER MESSAGE National Weather Service Pueblo CO 232 PM MST Thu Mar 11 2021 ...A Red Flag Warning remains in effect until 7 PM today for gusty winds and low relative humidity values for fire weather zones 230 and 233...which includes Las Animas county... COZ230-233-120200- /O.CON.KPUB.FW.W.0009.000000T0000Z-210312T0200Z/ Western Las Animas County Including Trinidad and Thatcher- Eastern Las Animas County Including Pinon Canyon- 232 PM MST Thu Mar 11 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 230 AND 233... * Affected Area...Fire Weather Zones 230 and 233. * Winds...South 15 to 25 mph with gusts up to 40 mph. * Relative Humidity...As low as 14 percent. * Impacts...Conditions will be favorable for rapid rates of fire growth and spread. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
283 WWUS85 KPUB 120056 RFWPUB URGENT - FIRE WEATHER MESSAGE National Weather Service Pueblo CO 556 PM MST Thu Mar 11 2021 ...Red Flag Warning Cancelled... COZ230-233-120200- /O.CAN.KPUB.FW.W.0009.000000T0000Z-210312T0200Z/ Western Las Animas County Including Trinidad and Thatcher- Eastern Las Animas County Including Pinon Canyon- 556 PM MST Thu Mar 11 2021 RED FLAG WARNING IS CANCELLED FOR FIRE WEATHER ZONES 230 AND 233... The National Weather Service in Pueblo has cancelled the Red Flag Warning. Relative humidities have increased and no longer meet criteria for a red flag warning. Thus, the red flag warning has been cancelled for Las Animas County. $$
The office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 3:55 AM MST | Winter Storm Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more | 35 hr |
| Mar 11, 2:57 PM MST | Winter Storm Warning | PUB | Alamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 6 more | 3 days |
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.