Alert archive / Texas / Red Flag Warnings in 2021
Red Flag Warning 2, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this red flag warning at Mar 16, 2021, 1:40 PM CDT for 20 counties in Texas. It took effect at Mar 17, 2021, 10:00 AM CDT. It was in force for 11 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 16, 2021, 1:40 PM CDT (18:40 UTC)
- In effect from
- Mar 17, 2021, 10:00 AM CDT
- Expired
- Mar 17, 2021, 9:00 PM CDT
- In force
- 11 hr
- Issued by
- NWS Austin/San Antonio, TX
Counties Atascosa County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Comal County, TX, Dimmit County, TX, Edwards County, TX, Frio County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Val Verde County, TX, Wilson County, TX, Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 104 km from the middle of the area, began a volume at 18:43 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
Del Rio, TX (KDRT), launched 12:00Z, 6.7 hours before the alert went out and 157 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
- 514 J/kg
- Mixed-layer CIN
- -235 J/kg
- Mixed-layer LCL
- 806 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
391 WWUS84 KEWX 161840 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 140 PM CDT Tue Mar 16 2021 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 7 PM CDT WEDNESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE RIO GRANDE AND WINTER GARDEN REGIONS... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 am to 7 pm CDT Wednesday. TXZ202>204-217>220-228-170245- /O.UPG.KEWX.FW.A.0001.210317T1600Z-210318T0000Z/ /O.NEW.KEWX.FW.W.0002.210317T1500Z-210318T0000Z/ Kinney-Uvalde-Medina-Maverick-Zavala-Frio-Atascosa-Dimmit- 140 PM CDT Tue Mar 16 2021 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 7 PM CDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 202, 203, 204, 217, 218, 219, 220, AND 228... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 AM to 7 PM CDT Wednesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire weather zones 202, 203, 204, 217, 218, 219, 220, and 228. * WINDS...Northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ TXZ183-170245- /O.NEW.KEWX.FW.W.0002.210317T1500Z-210318T0000Z/ Val Verde- 140 PM CDT Tue Mar 16 2021 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 7 PM CDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 183... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 AM to 7 PM CDT Wednesday. * AFFECTED AREA...Fire weather zone 183. * WINDS...Northwest 15 to 30 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent, lowest near the Rio Grande. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
5 follow-up statements
942 WWUS84 KEWX 170742 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 242 AM CDT Wed Mar 17 2021 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 7 PM CDT WEDNESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE RIO GRANDE AND EDWARDS PLATEAU AND WESTERN HILL COUNTRY REGIONS... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 am to 7 pm CDT Wednesday. TXZ184>187-205-221-222-172000- /O.EXA.KEWX.FW.W.0002.210317T1500Z-210318T0000Z/ Edwards-Real-Kerr-Bandera-Bexar-Wilson-Karnes- 242 AM CDT Wed Mar 17 2021 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EDWARDS PLATEAU AND THE SAN ANTONIO METRO AREA... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 AM this morning to 7 PM CDT this evening. * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 19 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ TXZ183-202>204-217>220-228-172000- /O.CON.KEWX.FW.W.0002.210317T1500Z-210318T0000Z/ Val Verde-Kinney-Uvalde-Medina-Maverick-Zavala-Frio-Atascosa- Dimmit- 242 AM CDT Wed Mar 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF THE RIO GRANDE PLAINS AND WESTERN HILL COUNTRY REGIONS... * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
120 WWUS84 KEWX 171741 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 1241 PM CDT Wed Mar 17 2021 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT WEDNESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE RIO GRANDE AND EDWARDS PLATEAU AND WESTERN HILL COUNTRY REGIONS... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in until 7 pm CDT Wednesday. TXZ189>191-206-180000- /O.EXA.KEWX.FW.W.0002.000000T0000Z-210318T0000Z/ Kendall-Blanco-Hays-Comal- 1241 PM CDT Wed Mar 17 2021 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHERN HILL COUNTRY... The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 7 PM CDT this evening. * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ TXZ183>187-202>205-217>222-228-180000- /O.CON.KEWX.FW.W.0002.000000T0000Z-210318T0000Z/ Val Verde-Edwards-Real-Kerr-Bandera-Kinney-Uvalde-Medina-Bexar- Maverick-Zavala-Frio-Atascosa-Wilson-Karnes-Dimmit- 1241 PM CDT Wed Mar 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR RIO GRANDE PLAINS, SOUTHERN EDWARDS PLATEAU, WINTER GARDEN, SAN ANTONIO METRO, AND PORTIONS OF THE WESTERN HILL COUNTRY... * WINDS...Northwest 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
442 WWUS84 KEWX 172346 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 646 PM CDT Wed Mar 17 2021 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT WEDNESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE RIO GRANDE AND EDWARDS PLATEAU AND WESTERN HILL COUNTRY REGIONS... The National Weather Service in Austin/San Antonio has extended the Red Flag Warning for wind and low relative humidity, which is now in effect until 9 pm CDT Wednesday. TXZ183>187-189>191-202>206-217>222-228-180200- /O.EXT.KEWX.FW.W.0002.000000T0000Z-210318T0200Z/ Val Verde-Edwards-Real-Kerr-Bandera-Kendall-Blanco-Hays-Kinney- Uvalde-Medina-Bexar-Comal-Maverick-Zavala-Frio-Atascosa-Wilson- Karnes-Dimmit- 646 PM CDT Wed Mar 17 2021 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR RIO GRANDE PLAINS, SOUTHERN EDWARDS PLATEAU, WINTER GARDEN, SAN ANTONIO METRO, AND PORTIONS OF THE WESTERN HILL COUNTRY... * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$
567 WWUS84 KEWX 172354 CCA RFWEWX URGENT - FIRE WEATHER MESSAGE...CORRECTED National Weather Service Austin/San Antonio TX 654 PM CDT Wed Mar 17 2021 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM CDT WEDNESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE RIO GRANDE AND EDWARDS PLATEAU AND WESTERN HILL COUNTRY REGIONS... The National Weather Service in Austin/San Antonio has extended the Red Flag Warning for wind and low relative humidity, which is now in effect until 9 pm CDT Wednesday. TXZ183>187-189>191-202>206-217>222-228-180200- /O.EXT.KEWX.FW.W.0002.000000T0000Z-210318T0200Z/ Val Verde-Edwards-Real-Kerr-Bandera-Kendall-Blanco-Hays-Kinney- Uvalde-Medina-Bexar-Comal-Maverick-Zavala-Frio-Atascosa-Wilson- Karnes-Dimmit- 654 PM CDT Wed Mar 17 2021 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR RIO GRANDE PLAINS, SOUTHERN EDWARDS PLATEAU, WINTER GARDEN, SAN ANTONIO METRO, AND PORTIONS OF THE WESTERN HILL COUNTRY... * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
760 WWUS84 KEWX 180206 RFWEWX URGENT - FIRE WEATHER MESSAGE National Weather Service Austin/San Antonio TX 906 PM CDT Wed Mar 17 2021 TXZ183>187-189>191-202>206-217>222-228-180315- /O.EXP.KEWX.FW.W.0002.000000T0000Z-210318T0200Z/ Val Verde-Edwards-Real-Kerr-Bandera-Kendall-Blanco-Hays-Kinney- Uvalde-Medina-Bexar-Comal-Maverick-Zavala-Frio-Atascosa-Wilson- Karnes-Dimmit- 906 PM CDT Wed Mar 17 2021 ...RED FLAG WARNING HAS EXPIRED... Winds have decreased and relative humidity has increased as temperatures have dropped, and we have allowed the Red Flag Warning to expire. $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 3:40 AM CDT | Fire Weather Watch | EWX | Atascosa, Dimmit, Frio, Kinney, Maverick, Medina and 2 more | 10 hr |
Nearby
Red Flag Warnings in Texas, 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.