Alert archive / Texas / Red Flag Warnings in 2011

Red Flag Warning 27, NWS Austin/San Antonio, TX

November 3, 201119 counties in Texas

NWS Austin/San Antonio, TX issued this red flag warning at Nov 3, 2011, 4:15 AM CDT for 19 counties in Texas. It took effect at Nov 3, 2011, 11:00 AM CDT. It was in force for 5 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
Nov 3, 2011, 4:15 AM CDT (09:15 UTC)
In effect from
Nov 3, 2011, 11:00 AM CDT
Expired
Nov 3, 2011, 4:00 PM CDT
In force
5 hr
Issued by
NWS Austin/San Antonio, TX

Counties Atascosa County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Lavaca County, TX, Lee County, TX, Travis County, TX, Williamson County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 22 km from the middle of the area, began a volume at 09:15 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

Corpus Christi, TX (KCRP), launched 00:00Z, 9.3 hours before the alert went out and 233 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, Corpus Christi, TX at 00:00Z on 2011-11-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 294 joules per kilogram.LCLLFCEL10008507005003002001001 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, Corpus Christi, TX at 00:00Z on 2011-11-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.19395878Sfc1 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
294 J/kg
Mixed-layer CIN
-204 J/kg
Mixed-layer LCL
1086 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
185 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

853 
WWUS84 KEWX 030915
RFWEWX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
415 AM CDT THU NOV 3 2011

...RED FLAG WARNING IN EFFECT FOR THE EASTERN HALF OF SOUTH 
CENTRAL TEXAS FROM 11 AM THIS MORNING TO 4 PM CDT THIS AFTERNOON 
DUE TO STRONG WINDS AND DRY CONDITIONS IN THE WAKE OF A COLD 
FRONT...

.DRY WINDY CONDITIONS BEHIND A COLD FRONT TODAY WILL RESULT IN 
CRITICAL FIRE WEATHER CONDITIONS DEVELOPING BY LATE THIS MORNING
AND CONTINUING INTO THE AFTERNOON HOURS.  20-FOOT WINDS OF 15 TO
20 MPH ALONG WITH HUMIDITIES FALLING TO 15 TO 20 PERCENT ARE 
EXPECTED. THESE CONDITIONS WILL DEVELOP GENERALLY ALONG AND EAST
OF HIGHWAY 281 FROM 11 AM TO 4 PM.

TXZ172-173-189>194-205>209-220>225-032100-
/O.NEW.KEWX.FW.W.0027.111103T1600Z-111103T2100Z/
BURNET-WILLIAMSON-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-BEXAR-
COMAL-GUADALUPE-CALDWELL-FAYETTE-ATASCOSA-WILSON-KARNES-GONZALES-
DE WITT-LAVACA-
415 AM CDT THU NOV 3 2011

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 4 PM CDT
THIS AFTERNOON FOR STRONG WINDS AND LOW RELATIVE HUMIDITIES
ACROSS THE EASTERN HALF OF SOUTH CENTRAL TEXAS...

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
RED FLAG WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO
4 PM CDT THIS AFTERNOON. 

* AFFECTED AREA...THE FOLLOWING SOUTH CENTRAL TEXAS COUNTIES... 
  BURNET...WILLIAMSON...KENDALL...BLANCO...HAYS...TRAVIS... 
  BASTROP...LEE...BEXAR...COMAL...GUADALUPE...CALDWELL... 
  FAYETTE...ATASCOSA...WILSON...KARNES...GONZALES...DE WITT... 
  LAVACA. 

* 20-FOOT WIND...NORTH AT 15 TO 20 MPH.

* HUMIDITY...15 TO 20 PERCENT. 

* THUNDERSTORMS...NONE. 

* 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

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 3, 4:00 AM CDTFreeze WarningEWXBandera, Bastrop, Bexar, Blanco, Burnet, Caldwell and 16 more29 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.