Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 26, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this red flag warning at Oct 17, 2011, 3:29 PM CDT for 33 counties in Texas. It took effect at Oct 18, 2011, 12:00 PM CDT. 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
- Oct 17, 2011, 3:29 PM CDT (20:29 UTC)
- In effect from
- Oct 18, 2011, 12:00 PM CDT
- Expired
- Oct 18, 2011, 7:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Austin/San Antonio, TX
All 33 counties
Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Dimmit County, TX, Edwards County, TX, Fayette County, TX, Frio County, TX, Gillespie County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lavaca County, TX, Lee County, TX, Llano County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 20:27 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, 8.5 hours before the alert went out and 218 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
- 1232 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
047 WWUS84 KEWX 172029 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 329 PM CDT MON OCT 17 2011 ...A DRY COLD FRONT WILL BRING STRONG GUSTY WINDS AND DRIER AIR TO SOUTH CENTRAL TEXAS... .A DRY COLD FRONT WILL MOVE THROUGH SOUTH CENTRAL TEXAS EARLY TUESDAY MORNING BRINGING STRONG GUSTY WINDS AND DRIER AIR. THE STRONG WINDS WILL BEGIN IN THE MORNING AND CONTINUE THROUGH THE AFTERNOON WHEN THEY WILL BE BETWEEN 20 AND 25 MPH. THE RELATIVE HUMIDITY WILL DROP THROUGH THE MORNING AND AFTERNOON AND REACH CRITICAL LEVELS STARTING AROUND NOON. THE LOWEST RH WILL BE ACROSS THE WESTERN COUNTIES WHILE THE STRONGEST WINDS WILL BE OVER THE EAST. CONDITIONS SHOULD IMPROVE WHEN THE WINDS WEAKEN AROUND SUNSET. TXZ171>173-183>194-202>209-217>225-228-180830- /O.NEW.KEWX.FW.W.0026.111018T1700Z-111019T0000Z/ LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE- MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA- FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT- 329 PM CDT MON OCT 17 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM CDT TUESDAY FOR A DRY FRONT ACROSS ALL OF SOUTH CENTRAL TEXAS... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TO 7 PM CDT TUESDAY. * AFFECTED AREA...THE FOLLOWING SOUTH CENTRAL TEXAS COUNTIES... LLANO...BURNET...WILLIAMSON...VAL VERDE...EDWARDS...REAL... KERR...BANDERA...GILLESPIE...KENDALL...BLANCO...HAYS... TRAVIS...BASTROP...LEE...KINNEY...UVALDE...MEDINA...BEXAR... COMAL...GUADALUPE...CALDWELL...FAYETTE...MAVERICK...ZAVALA... FRIO...ATASCOSA...WILSON...KARNES...GONZALES...DE WITT... LAVACA...DIMMIT. * 20-FOOT WIND...NORTH AT 20 TO 25 MPH. * HUMIDITY...15 TO 20 PERCENT. * THUNDERSTORMS...NONE. STRONGEST WINDS WILL BE ACROSS THE EASTERN HALF OF THE FORECAST AREA. * 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. AVOID THE USE OF OPEN FLAMES OR ANY ACTIVITIES THAN MAY GENERATE SPARKS. ACCIDENTAL IGNITIONS WILL HAVE THE POTENTIAL TO GROW QUICKLY INTO DANGEROUS WIND DRIVEN WILDFIRES. && $$ FOR INFORMATION ON BURN BANS PLEASE VISIT THE TEXAS INTERAGENCY COORDINATION CENTER WEBSITE AT: TICC.TAMU.EDU
1 follow-up statement
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
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 17, 3:27 PM CDT | Wind Advisory | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more | 27 hr |
Nearby
Red Flag Warnings in Texas, 2011Every red flag warning in 2011
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.