Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 8, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this red flag warning at Apr 3, 2011, 9:11 AM CDT for 33 counties in Texas. It took effect at Apr 4, 2011, 9:00 AM CDT. It was in force for 15 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
- Apr 3, 2011, 9:11 AM CDT (14:11 UTC)
- In effect from
- Apr 4, 2011, 9:00 AM CDT
- Expired
- Apr 5, 2011, 12:00 AM CDT
- In force
- 15 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 14:10 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, 2.2 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
- 1740 J/kg
- Mixed-layer CIN
- -224 J/kg
- Mixed-layer LCL
- 554 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
432 WWUS84 KEWX 031411 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 911 AM CDT SUN APR 3 2011 ...A RED FLAG WARNING IS IN EFFECT FROM 9 AM CDT MONDAY THROUGH 12 AM TUESDAY ACROSS THE WESTERN AND CENTRAL PORTIONS OF SOUTH CENTRAL TEXAS DUE TO A DRY COLD FRONT... .A PACIFIC STORM SYSTEM WILL BRING A MOSTLY DRY COLD FRONT ACROSS SOUTH CENTRAL TEXAS DURING THE DAYTIME HOURS ON MONDAY. WHILE THERE IS A SLIGHT CHANCE OF RAIN OVER EASTERN PORTIONS OF SOUTH CENTRAL TEXAS...AREAS ALONG AND WEST OF A LINE FROM BURNET TO LULING TO CAMPBELLTON CAN EXPECT LITTLE OR NO RAINFALL BEFORE BREEZY AND VERY DRY CONDITIONS SETTLE INTO THE AREA BEHIND THE FRONT. VERY DRY AIR WILL CONTINUE TO SPREAD SOUTHWARD ACROSS THE REST OF SOUTH CENTRAL TEXAS MONDAY EVENING...WITH ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS EXPECTED. THE DRY AIR MASS WILL REMAIN OVER THE AREA THROUGH AT LEAST TUESDAY...WITH BREEZY AND DRY SOUTH WINDS RETURNING OVER VAL VERDE COUNTY TUESDAY AFTERNOON. TXZ171>173-183>192-202>208-217>221-228-040215- /O.UPG.KEWX.FW.A.0004.110404T1400Z-110405T0500Z/ /O.NEW.KEWX.FW.W.0008.110404T1400Z-110405T0500Z/ LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-KINNEY-UVALDE-MEDINA-BEXAR- COMAL-GUADALUPE-CALDWELL-MAVERICK-ZAVALA-FRIO-ATASCOSA-WILSON- DIMMIT- 911 AM CDT SUN APR 3 2011 ...RED FLAG WARNING IN EFFECT FROM 9 AM MONDAY TO MIDNIGHT CDT MONDAY NIGHT... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 9 AM MONDAY TO MIDNIGHT CDT MONDAY NIGHT. THE RED FLAG WARNING IS AN UPGRADE TO THE PREVIOUSLY ISSUED FIRE WEATHER WATCH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
4 follow-up statements
773 WWUS84 KEWX 031951 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 251 PM CDT SUN APR 3 2011 ...A RED FLAG WARNING IS IN EFFECT FROM 9 AM CDT MONDAY THROUGH 12 AM TUESDAY FOR ALL OF SOUTH CENTRAL TEXAS DUE TO A DRY COLD FRONT... .A PACIFIC STORM SYSTEM WILL BRING A MOSTLY DRY COLD FRONT ACROSS SOUTH CENTRAL TEXAS DURING THE DAYTIME HOURS ON MONDAY. WHILE THERE IS A SLIGHT CHANCE OF RAIN OVER EASTERN PORTIONS OF SOUTH CENTRAL TEXAS...AREAS ALONG AND WEST OF A LINE FROM BURNET TO LULING TO CAMPBELLTON CAN EXPECT LITTLE OR NO RAINFALL BEFORE BREEZY AND VERY DRY CONDITIONS SETTLE INTO THE AREA BEHIND THE FRONT. WHILE EASTERN AREAS HAVE A BETTER CHANCE FOR RAIN...EXPECTED RAINFALL AMOUNTS WILL ALSO BE VERY LOW. THE DRY AIR MASS WILL REMAIN OVER THE AREA THROUGH AT LEAST TUESDAY...WITH BREEZY AND DRY SOUTH WINDS RETURNING OVER VAL VERDE COUNTY TUESDAY AFTERNOON. TXZ193-194-209-222>225-040800- /O.EXA.KEWX.FW.W.0008.110404T1400Z-110405T0500Z/ BASTROP-LEE-FAYETTE-KARNES-GONZALES-DE WITT-LAVACA- 251 PM CDT SUN APR 3 2011 ...RED FLAG WARNING IN EFFECT FROM 9 AM MONDAY TO MIDNIGHT CDT MONDAY NIGHT... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 9 AM MONDAY TO MIDNIGHT CDT MONDAY NIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$ TXZ171>173-183>192-202>208-217>221-228-040800- /O.CON.KEWX.FW.W.0008.110404T1400Z-110405T0500Z/ LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-KINNEY-UVALDE-MEDINA-BEXAR- COMAL-GUADALUPE-CALDWELL-MAVERICK-ZAVALA-FRIO-ATASCOSA-WILSON- DIMMIT- 251 PM CDT SUN APR 3 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM MONDAY TO MIDNIGHT CDT MONDAY NIGHT... PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
486 WWUS84 KEWX 040958 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 458 AM CDT MON APR 4 2011 ...A RED FLAG WARNING IS IN EFFECT FROM 9 AM CDT TODAY THROUGH 12 MIDNIGHT TONIGHT FOR ALL OF SOUTH CENTRAL TEXAS DUE TO A STRONG DRY COLD FRONT... .A STRONG DRY COLD FRONT WILL MOVE THROUGH SOUTH CENTRAL TEXAS THIS MORNING THROUGH AROUND NOON...WITH WINDY AND VERY DRY AIR EXPECTED TO DEVELOP FOR SEVERAL HOURS TODAY AND THIS EVENING. WHILE THERE IS A SLIGHT CHANCE OF RAIN OVER EASTERN PORTIONS OF SOUTH CENTRAL TEXAS...AREAS ALONG AND WEST OF A LINE FROM FLORENCE TO BASTROP TO HALLETTSVILLE LINE CAN EXPECT LITTLE OR NO RAINFALL BEFORE BREEZY AND VERY DRY CONDITIONS SETTLE INTO THE AREA BEHIND THE FRONT. THE DRY AIR MASS WILL REMAIN OVER THE AREA THROUGH AT LEAST TUESDAY. BREEZY AND DRY SOUTH WINDS WILL RETURN BY TUESDAY AFTERNOON...WITH MORE ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS POSSIBLE OVER THE EDWARDS PLATEAU. GOOD MOISTURE RECOVERIES ARE EXPECTED BY LATE WEDNESDAY MORNING. TXZ171>173-183>194-202>209-217>225-228-042200- /O.CON.KEWX.FW.W.0008.110404T1400Z-110405T0500Z/ 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- 458 AM CDT MON APR 4 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO MIDNIGHT CDT TONIGHT... EXPECT THE STRONG COLD FRONT TO MOVE SOUTH ACROSS SOUTH CENTRAL TEXAS BETWEEN 7 AM AND NOON. STRONG 20-FOOT LEVEL WINDS OF 15 TO 25 MPH COULD GUST OVER 35 MPH AT TIMES IMMEDIATELY BEHIND THE FRONT...AND ALSO IN THE LATE AFTERNOON HOURS. RELATIVE HUMIDITIES WILL DROP TO NEAR THE CRITICAL VALUES OF 20 PERCENT IMMEDIATELY BEHIND THE FRONT...AND WILL BOTTOM OUT AT BETWEEN 10 AND 20 PERCENT FOR MOST AREAS. A FEW HUMIDITIES IN THE SINGLE DIGITS ARE POSSIBLE FOR COUNTIES ALONG THE RIO GRANDE. EXPECT POOR MOISTURE RECOVERY TONIGHT AND BREEZY AND DRY AFTERNOON CONDITIONS FOR WESTERN PARTS OF SOUTH CENTRAL TEXAS ON TUESDAY. MOISTURE RECOVERY WILL BE BETTER FOR NEARLY ALL AREAS LATE WEDNESDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
729 WWUS84 KEWX 041649 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1149 AM CDT MON APR 4 2011 ...A RED FLAG WARNING IS IN EFFECT FROM 9 AM CDT TODAY THROUGH 12 MIDNIGHT TONIGHT FOR ALL OF SOUTH CENTRAL TEXAS DUE TO A STRONG DRY COLD FRONT... .A STRONG DRY COLD FRONT HAS PUSHED THROUGH THE REGION...BRINGING STRONG NORTH WINDS AND VERY DRY AIR. THE STRONG NORTH WINDS WILL CONTINUE THROUGH THE AFTERNOON AND EVENING HOURS. A DRY AIRMASS IS PUSHING INTO THE REGION...AND RELATIVE HUMIDITIES ARE EXPECTED TO FALL INTO THE UPPER TEENS THIS AFTERNOON. AREAS WEST OF A LINE FROM KERRVILLE TO HONDO TO COTULLA CAN EXPECT EVEN LOWER RELATIVE HUMIDITIES...POSSIBLY IN THE SINGLE DIGITS...THIS AFTERNOON. POOR MOISTURE RECOVERY IS EXPECTED OVERNIGHT. THE DRY AIR MASS WILL REMAIN OVER THE AREA THROUGH AT LEAST TUESDAY. BREEZY AND DRY SOUTH WINDS WILL RETURN BY TUESDAY AFTERNOON...WITH MORE ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS POSSIBLE OVER THE EDWARDS PLATEAU. GOOD MOISTURE RECOVERIES ARE EXPECTED BY LATE WEDNESDAY MORNING. TXZ171>173-183>194-202>209-217>225-228-050500- /O.CON.KEWX.FW.W.0008.000000T0000Z-110405T0500Z/ 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- 1149 AM CDT MON APR 4 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT... STRONG NORTHWEST TO NORTH 20-FOOT LEVEL WINDS OF 15 TO 25 MPH COULD GUST OVER 35 MPH AT TIMES THROUGH THE EARLY EVENING HOURS. RELATIVE HUMIDITIES WILL DROP TO NEAR THE CRITICAL VALUES OF 20 PERCENT EARLY THIS AFTERNOON...AND WILL BOTTOM OUT AT BETWEEN 10 AND 20 PERCENT FOR MOST OF THE AREA. COUNTIES ALONG THE RIO GRANDE COULD SEE RELATIVE HUMIDITIES DROP INTO THE SINGLE DIGITS. EXPECT POOR MOISTURE RECOVERY TONIGHT AND BREEZY AND DRY AFTERNOON CONDITIONS FOR WESTERN PARTS OF SOUTH CENTRAL TEXAS ON TUESDAY. MOISTURE RECOVERY WILL BE BETTER FOR NEARLY ALL AREAS LATE WEDNESDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
763 WWUS84 KEWX 042035 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 335 PM CDT MON APR 4 2011 ...A RED FLAG WARNING IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR ALL OF SOUTH CENTRAL TEXAS DUE TO A STRONG DRY COLD FRONT... .THE COLD FRONT WHICH PUSHED THROUGH THE REGION THIS MORNING HAS BROUGHT STRONG NORTH WINDS AND A VERY DRY AIRMASS TO SOUTH CENTRAL TEXAS. THE STRONG NORTH WINDS WILL CONTINUE THROUGH THE EVENING HOURS AND GRADUALLY DECREASE AFTER SUNSET. HOWEVER...WINDS ARE EXPECTED TO REMAIN ABOVE CRITICAL LEVELS FOR SEVERAL HOURS AFTER SUNSET. THE DRY AIRMASS IS STILL PUSHING INTO THE REGION...WITH RELATIVE HUMIDITIES REMAINING IN THE UPPER TEENS THROUGH THIS EVENING. POOR MOISTURE RECOVERY IS EXPECTED OVERNIGHT...WITH RH VALUES GENERALLY REMAINING AT OR BELOW 50 PERCENT ACROSS MUCH OF THE REGION OVERNIGHT. THE DRY AIR MASS WILL REMAIN OVER THE AREA THROUGH AT LEAST TUESDAY. BREEZY AND DRY SOUTH WINDS WILL RETURN TUESDAY AFTERNOON...WITH ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS POSSIBLE OVER THE EDWARDS PLATEAU...WESTERN HILL COUNTRY...AND RIO GRANDE PLAINS. GOOD MOISTURE RECOVERIES ARE EXPECTED BY LATE WEDNESDAY MORNING. TXZ171>173-183>194-202>209-217>225-228-050500- /O.CON.KEWX.FW.W.0008.000000T0000Z-110405T0500Z/ 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- 335 PM CDT MON APR 4 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT... STRONG NORTHWEST 20-FT LEVEL WINDS OF 15-25 MPH WITH OCCASIONAL GUSTS TO 35 MPH WILL CONTINUE THROUGH THIS EVENING. WINDS WILL GRADUALLY DECREASE THIS EVENING...HOWEVER...WINDS ARE EXPECTED TO REMAIN ABOVE CRITICAL LEVELS FOR SEVERAL HOURS AFTER SUNSET. RELATIVE HUMIDITIES WILL REMAIN IN THE UPPER TEENS THROUGH THIS EVENING. POOR MOISTURE RECOVERY IS EXPECTED OVERNIGHT...WITH RH VALUES GENERALLY REMAINING AT OR BELOW 50 PERCENT ACROSS MUCH OF THE REGION NEAR CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED FOR WESTERN PARTS OF SOUTH CENTRAL TEXAS TUESDAY AFTERNOON...WITH ELEVATED FIRE WEATHER CONDITIONS EXTENDING EASTWARD TO THE I-35 CORRIDOR. MOISTURE RECOVERY WILL BE BETTER FOR NEARLY ALL AREAS TUESDAY NIGHT AND WEDNESDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
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.