Alert archive / Texas / Red Flag Warnings in 2013
Red Flag Warning 13, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this red flag warning at Apr 20, 2013, 4:21 AM CDT for 4 counties in Texas. It took effect at Apr 20, 2013, 1:00 PM CDT. It was in force for 6 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 20, 2013, 4:21 AM CDT (09:21 UTC)
- In effect from
- Apr 20, 2013, 1:00 PM CDT
- Expired
- Apr 20, 2013, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Austin/San Antonio, TX
Counties Edwards County, TX, Kinney County, TX, Maverick County, TX, Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 36 km from the middle of the area, began a volume at 09:21 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 00:00Z, 9.4 hours before the alert went out and 31 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
- 3253 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
599 WWUS84 KEWX 200921 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 421 AM CDT SAT APR 20 2013 ...RED FLAG WARNING FOR WESTERN PARTS OF SOUTH CENTRAL TEXAS THIS AFTERNOON DUE TO LOW RELATIVE HUMIDITY AND STRONG WINDS... .DRY AIR HAS SETTLED OVER SOUTH CENTRAL TEXAS BEHIND A COLD FRONT. DEW POINTS THIS MORNING ARE IN THE 20S ACROSS WESTERN PARTS OF THE FORECAST AREA AND AS TEMPERATURES RISE THIS AFTERNOON THE RELATIVE HUMIDITY WILL DROP BELOW 20 PERCENT OVER THE WESTERN EDWARDS PLATEAU AND RIO GRANDE PLAINS. A HIGH PRESSURE CENTER AT THE SURFACE WILL MOVE TO THE EAST AND THE WINDS WILL SWITCH AROUND TO THE SOUTHEAST WITH SPEEDS INCREASING THIS AFTERNOON. TWENTY FOOT WINDS WILL BE BETWEEN 15 AND 20 MPH. THE RESULT WILL BE CRITICAL FIRE WEATHER CONDITIONS DURING THE AFTERNOON. TXZ183-184-202-217-210000- /O.NEW.KEWX.FW.W.0013.130420T1800Z-130421T0000Z/ VAL VERDE-EDWARDS-KINNEY-MAVERICK- 421 AM CDT SAT APR 20 2013 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITIES ACROSS EDWARDS...VAL VERDE...KINNEY...AND MAVERICK COUNTIES... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING. * AFFECTED AREA...THE FOLLOWING SOUTH CENTRAL TEXAS COUNTIES... VAL VERDE...EDWARDS...KINNEY...MAVERICK. * 20-FOOT WIND...FROM THE SOUTHEAST AT 15 TO 20 MPH. * HUMIDITY...WILL DROP TO 17 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 THAT MAY GENERATE SPARKS. ACCIDENTAL IGNITIONS WILL HAVE THE POTENTIAL TO GROW QUICKLY INTO DANGEROUS WIND DRIVEN WILDFIRES. && $$ FOR INFORMATION ON BURN BANS PLEASE VISIT THE TEXAS INTERAGENCY COORDINATION CENTER WEBSITE AT: TICC.TAMU.EDU
1 follow-up statement
158 WWUS84 KEWX 202110 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 410 PM CDT SAT APR 20 2013 ...RED FLAG WARNING FOR WESTERN PARTS OF SOUTH CENTRAL TEXAS THROUGH 7 PM DUE TO LOW RELATIVE HUMIDITY AND STRONG WINDS... .DRY AIR HAS SETTLED OVER SOUTH CENTRAL TEXAS ASSOCIATED WITH A DRY RIDGE OF HIGH PRESSURE...THAT FOLLOWED THE STRONG COLD FRONT ON THURSDAY. THE RELATIVE HUMIDITY WILL CONTINUE TO BE BETWEEN 10 AND 20 PERCENT THROUGH 7 PM OVER THE SOUTHERN EDWARDS PLATEAU AND RIO GRANDE PLAINS. TWENTY FOOT WINDS WILL CONTINUE TO BE BETWEEN 15 AND 20 MPH. THE RESULT WILL BE CRITICAL FIRE WEATHER CONDITIONS THROUGH 7 PM. TXZ183-184-202-217-210000- /O.CON.KEWX.FW.W.0013.000000T0000Z-130421T0000Z/ VAL VERDE-EDWARDS-KINNEY-MAVERICK- 410 PM CDT SAT APR 20 2013 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR STRONG SOUTH TO SOUTHEAST WINDS AND LOW RELATIVE HUMIDITIES ACROSS VAL VERDE...EDWARDS...KINNEY...AND MAVERICK COUNTIES... * AFFECTED AREA...THE FOLLOWING SOUTH CENTRAL TEXAS COUNTIES... VAL VERDE...EDWARDS...KINNEY...MAVERICK. * 20-FOOT WIND...FROM THE SOUTHEAST AT 15 TO 20 MPH. * HUMIDITY...WILL DROP TO NEAR 10 TO 20 PERCENT. * THUNDERSTORMS...NONE. * IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. AVOID THE USE OF OPEN FLAMES OR ANY ACTIVITIES THAT MAY GENERATE SPARKS. ACCIDENTAL IGNITIONS WILL HAVE THE POTENTIAL TO GROW QUICKLY INTO DANGEROUS WIND DRIVEN WILDFIRES. && $$ FOR INFORMATION ON BURN BANS PLEASE VISIT THE TEXAS INTERAGENCY COORDINATION CENTER WEBSITE AT: TICC.TAMU.EDU
Nearby
Red Flag Warnings in Texas, 2013Every red flag warning in 2013
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.