Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 20, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this red flag warning at Jun 19, 2011, 4:42 AM CDT for 23 counties in Texas. It took effect at Jun 19, 2011, 1:00 PM CDT. It was in force for 7 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 19, 2011, 4:42 AM CDT (09:42 UTC)
- In effect from
- Jun 19, 2011, 1:00 PM CDT
- Expired
- Jun 19, 2011, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Austin/San Antonio, TX
All 23 counties
Atascosa County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Comal County, TX, Dimmit County, TX, Edwards County, TX, Frio County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kinney 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, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 105 km from the middle of the area, began a volume at 09:44 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 19, 4:00 PM CDT | WILDFIRE 150 | Boerne, TX | PORTIONS OF I-10 NEAR BOERNE WERE TEMPORARILY SHUT DOWN AND EVACUATIONS WERE ORDERED. FIRE IS COMPLETELY CONTAINED. NO OFFICIAL REPORTS ON INJURIES AND OR STRUCTURE DAMAGE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 9.7 hours before the alert went out and 171 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
- 758 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 3141 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
035 WWUS84 KEWX 190942 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 442 AM CDT SUN JUN 19 2011 ...A RED FLAG WARNING IS IN EFFECT THIS AFTERNOON AND EARLY THIS EVENING FOR THE WESTERN TWO-THIRDS OF SOUTH CENTRAL TEXAS DUE TO LOW RELATIVE HUMIDITIES AND STRONG SOUTHERLY WINDS... .CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED TO DEVELOP THIS AFTERNOON...MAINLY ALONG AND WEST OF A GEORGETOWN TO NEW BRAUNFELS TO JOURDANTON LINE. AFTERNOON RELATIVE HUMIDITY VALUES ARE EXPECTED FALL INTO THE 15 TO 20 PERCENT RANGE...WHILE 20-FOOT LEVEL WINDS OCCASIONALLY BECOME SUSTAINED AT 15 TO 20 MPH. HUMIDITY VALUES ARE EXPECTED TO INCREASE BY 8 PM...WITH GOOD RECOVERIES TO NEAR OR ABOVE 70 PERCENT BY MONDAY MORNING. HOWEVER...BREEZY CONDITIONS WILL CONTINUE THROUGH MONDAY EVENING...AND ANOTHER DRY AFTERNOON IS EXPECTED TO RESULT IN NEAR CRITICAL FIRE WEATHER CONDITIONS FOR MUCH OF THE AREA AGAIN MONDAY AFTERNOON. TXZ171>173-183>192-202>206-217>220-228-200100- /O.NEW.KEWX.FW.W.0020.110619T1800Z-110620T0100Z/ LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-KINNEY-UVALDE-MEDINA-BEXAR- COMAL-MAVERICK-ZAVALA-FRIO-ATASCOSA-DIMMIT- 442 AM CDT SUN JUN 19 2011 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITIES ACROSS WESTERN AND CENTRAL PORTIONS OF SOUTH CENTRAL TEXAS... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT THIS EVENING. * AFFECTED AREA...THE FOLLOWING SOUTH CENTRAL TEXAS COUNTIES... LLANO...BURNET...WILLIAMSON...VAL VERDE...EDWARDS...REAL... KERR...BANDERA...GILLESPIE...KENDALL...BLANCO...HAYS... TRAVIS...KINNEY...UVALDE...MEDINA...BEXAR...COMAL... MAVERICK...ZAVALA...FRIO...ATASCOSA...DIMMIT. * 20-FOOT WIND...SOUTH TO SOUTHEAST AT 15 TO 20 MPH WITH GUSTS TO 30 MPH. * HUMIDITY...EXPECT AFTERNOON AND EARLY EVENING RELATIVE HUMIDITY VALUES OF 15 TO 20 PERCENT...WITH DRIEST AIR NEAR THE RIO GRANDE. * THUNDERSTORMS...AN ISOLATED THUNDERSTORM OR TWO COULD DEVELOP WEST OF AMISTAD RESERVOIR THIS EVENING...GUSTY WINDS AND LITTLE RAINFALL WOULD BE EXPECTED IF STORMS DEVELOP OVER THIS 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
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 4:40 AM CDT | Heat Advisory | EWX | Atascosa, Bastrop, Bexar, Caldwell, Comal, DeWitt and 18 more | 38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.