Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 6, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this red flag warning at Mar 4, 2011, 2:45 PM CST for 12 counties in Texas. It took effect at Mar 5, 2011, 11:00 AM CST. It was in force for 8 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
- Mar 4, 2011, 2:45 PM CST (20:45 UTC)
- In effect from
- Mar 5, 2011, 11:00 AM CST
- Expired
- Mar 5, 2011, 7:00 PM CST
- In force
- 8 hr
- Issued by
- NWS Austin/San Antonio, TX
Counties Bandera County, TX, Dimmit County, TX, Edwards County, TX, Frio County, TX, Kerr County, TX, Kinney County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Val Verde County, TX, Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 44 km from the middle of the area, began a volume at 20:42 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, 8.8 hours before the alert went out and 97 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
- 921 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
128 WWUS84 KEWX 042045 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 245 PM CST FRI MAR 4 2011 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CST SATURDAY FOR VAL VERDE...EDWARDS AND KINNEY COUNTIES FOR LOW RELATIVE HUMIDITIES AND WINDY CONDITIONS... .A COLD FRONT WILL PUSH THROUGH SOUTH CENTRAL TEXAS EARLY SATURDAY MORNING. WINDY CONDITIONS CAN BE EXPECTED BEHIND THE FRONT THROUGH THE AFTERNOON HOURS BEFORE GRADUALLY DIMINISHING. RELATIVE HUMIDITIES WILL TREND DOWN AS DRY AIR MOVES IN BEHIND THE FRONT...WITH SKIES CLEARING BY MID MORNING. THE COMBINATION OF THESE LOW RELATIVE HUMIDITIES AND MODERATE TO STRONG WINDS WILL CREATE DANGEROUS FIRE WEATHER CONDITIONS. TXZ183-184-202-051230- /O.NEW.KEWX.FW.W.0006.110305T1700Z-110306T0100Z/ VAL VERDE-EDWARDS-KINNEY- 245 PM CST FRI MAR 4 2011 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CST SATURDAY FOR LOW RELATIVE HUMIDITIES AND WINDY CONDITIONS... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 11 AM TO 7 PM CST SATURDAY. 20 FOOT WINDS OUT OF THE NORTH AT 15-25 MPH WILL COUPLE WITH RELATIVE HUMIDITIES DIPPING INTO THE UPPER TEENS TO PRODUCE DANGEROUS FIRE WEATHER CONDITIONS ON SATURDAY. 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. && $$
2 follow-up statements
371 WWUS84 KEWX 050327 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 927 PM CST FRI MAR 4 2011 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CST SATURDAY FOR WINDY AND DRY POST-FRONTAL CONDITIONS ACROSS THE WESTERN HALF OF SOUTH CENTRAL TEXAS... .A COLD FRONT WILL PUSH THROUGH SOUTH CENTRAL TEXAS EARLY SATURDAY MORNING. NO PRECIPITATION IS EXPECTED AHEAD OF THE FRONT ACROSS WESTERN PORTIONS OF SOUTH CENTRAL TEXAS. WINDY AND DRY CONDITIONS CAN BE EXPECTED BEHIND THE FRONT THROUGH THE AFTERNOON HOURS BEFORE GRADUALLY DIMINISHING IN THE EARLY EVENING. RELATIVE HUMIDITIES WILL LOWER INTO THE MID TEENS TO NEAR 20 PERCENT ACROSS THE WARNING AREA. THE COMBINATION OF THESE LOW RELATIVE HUMIDITIES AND STRONG WINDS WILL CREATE DANGEROUS FIRE WEATHER CONDITIONS. THE WARNED AREA INCLUDES THE COUNTIES GENERALLY ALONG AND WEST OF A KERRVILLE TO HONDO TO DILLEY LINE. TXZ185>187-203-204-217>219-228-051330- /O.EXA.KEWX.FW.W.0006.110305T1700Z-110306T0100Z/ REAL-KERR-BANDERA-UVALDE-MEDINA-MAVERICK-ZAVALA-FRIO-DIMMIT- 927 PM CST FRI MAR 4 2011 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CST SATURDAY FOR WINDY AND DRY POST-FRONTAL CONDITIONS... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 11 AM TO 7 PM CST SATURDAY. EXPECT NORTHERLY 20-FOOT WINDS OF 15-25 MPH COUPLED WITH RELATIVE HUMIDITIES DIPPING INTO THE UPPER TEENS TO NEAR 20. THESE DANGEROUS FIRE WEATHER CONDITIONS WILL PEAK DURING THE MID TO LATE AFTERNOON HOURS ON SATURDAY. WHILE DRY AIR WILL REMAIN OVER THE REGION... THE GUSTY NORTH WINDS WILL DIMINISH IN THE EVENING HOURS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$ TXZ183-184-202-051330- /O.CON.KEWX.FW.W.0006.110305T1700Z-110306T0100Z/ VAL VERDE-EDWARDS-KINNEY- 927 PM CST FRI MAR 4 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM CST SATURDAY FOR WINDY AND DRY POST-FRONTAL CONDITIONS... EXPECT NORTHERLY 20-FOOT WINDS OF 15-25 MPH COUPLED WITH RELATIVE HUMIDITIES DIPPING INTO THE MIDDLE AND UPPER TEENS. THESE DANGEROUS FIRE WEATHER CONDITIONS WILL PEAK DURING THE MID TO LATE AFTERNOON HOURS ON SATURDAY. WHILE DRY AIR WILL REMAIN OVER THE REGION... THE GUSTY NORTH WINDS WILL DIMINISH IN THE EVENING HOURS. 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. && $$
217 WWUS84 KEWX 051246 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 646 AM CST SAT MAR 5 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM CST THIS MORNING TO 7 PM CST THIS EVENING FOR WINDY AND DRY CONDITIONS ACROSS THE WESTERN HALF OF SOUTH CENTRAL TEXAS... .WINDY CONDITIONS HAVE DEVELOPED IN THE WAKE OF A COLD FRONTAL PASSAGE THIS MORNING WITH NORTHERLY WINDS OF 15 TO 25 MPH ALONG WITH HIGHER GUSTS. A DRIER AIRMASS WILL MOVE INTO THE AREA BY LATE THIS MORNING WITH RELATIVE HUMIDITIES FALLING INTO THE MID TEENS TO NEAR 20 PERCENT THIS AFTERNOON. THE COMBINATION OF THESE STRONG WINDS AND LOW RELATIVE HUMIDITIES WILL CREATE DANGEROUS FIRE WEATHER CONDITIONS. THE WARNED AREA INCLUDES THE COUNTIES GENERALLY ALONG AND WEST OF A KERRVILLE TO HONDO TO DILLEY LINE. WINDS WILL DECREASE RAPIDLY AFTER SUNSET THIS EVENING WHILE RELATIVE HUMIDITIES WILL BE SLOW TO RECOVER. TXZ183>187-202>204-217>219-228-060100- /O.CON.KEWX.FW.W.0006.110305T1700Z-110306T0100Z/ VAL VERDE-EDWARDS-REAL-KERR-BANDERA-KINNEY-UVALDE-MEDINA-MAVERICK- ZAVALA-FRIO-DIMMIT- 646 AM CST SAT MAR 5 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CST THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CST THIS EVENING. EXPECT NORTHERLY 20-FOOT WINDS OF 15 TO 25 MPH WITH GUSTS UP TO AROUND 40 MPH ALONG WITH RELATIVE HUMIDITIES FALLING INTO THE MID TEENS TO NEAR 20 PERCENT. THESE DANGEROUS FIRE WEATHER CONDITIONS WILL PEAK AROUND MID AFTERNOON. WINDS WILL DECREASE RAPIDLY AFTER SUNSET THIS EVENING WHILE RELATIVE HUMIDITIES WILL BE SLOW TO RECOVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 4, 2:39 PM CST | Wind Advisory | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more | 25 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.