Alert archive / Texas / Red Flag Warnings in 2007

Red Flag Warning 1, NWS Austin/San Antonio, TX

January 7, 200726 counties in Texas

NWS Austin/San Antonio, TX issued this red flag warning at Jan 7, 2007, 6:38 AM CST for 26 counties in Texas. It took effect at Jan 7, 2007, 11:00 AM CST. It was in force for 9 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
Jan 7, 2007, 6:38 AM CST (12:38 UTC)
In effect from
Jan 7, 2007, 11:00 AM CST
Expired
Jan 7, 2007, 8:00 PM CST
In force
9 hr
Issued by
NWS Austin/San Antonio, TX
All 26 counties

Atascosa County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Dimmit County, TX, Edwards County, TX, Frio County, TX, Gillespie County, TX, Guadalupe 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, Wilson County, TX, Zavala County, TX

The radar

The Austin/San Antonio radar (KEWX), 92 km from the middle of the area, began a volume at 12:37 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, 0.6 hours before the alert went out and 184 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, Del Rio, TX at 12:00Z on 2007-01-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Del Rio, TX at 12:00Z on 2007-01-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -125 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1296 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
-125 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS84 KEWX 071238
RFWEWX

RED FLAG WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
638 AM CST SUN JAN 7 2007

...BREEZY AND DRY CONDITIONS TO WARRANT A RED FLAG WARNING FOR
WESTERN AND CENTRAL PARTS OF SOUTH CENTRAL TEXAS TODAY AND THIS
EVENING...

.HIGH PRESSURE SPILLING INTO SOUTH CENTRAL TEXAS WILL CREATE BREEZY
AND DRY CONDITIONS THIS AFTERNOON INTO THIS EVENING. MEANWHILE...
THE FOREST SERVICE IS EXPECTING HIGH TO VERY HIGH FIRE DANGER FOR
TODAY. THE WINDS WILL SUBSIDE GRADUALLY DURING THE EVENING...BUT
DRY CONDITIONS WILL CONTINUE THROUGH AT LEAST TUESDAY.

TXZ171>173-183>192-202>208-217>221-228-080200-
/O.NEW.KEWX.FW.W.0001.070107T1700Z-070108T0200Z/
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-
638 AM CST SUN JAN 7 2007

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CST
THIS EVENING FOR WINDY AND DRY CONDITIONS ACROSS THE WESTERN 
TWO-THIRDS 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 8
PM CST THIS EVENING. THIS RED FLAG WARNING COVERS ALL THE SOUTH
CENTRAL TEXAS COUNTIES LOCATED ALONG AND WEST OF A TAYLOR TO
LOCKHART TO CAMPBELLTON LINE.

DAYTIME RELATIVE HUMIDITIES ARE EXPECTED TO DIP INTO THE 20 TO 30
PERCENT RANGE AS EARLY AS 11 AM ACROSS THE EDWARDS PLATEAU AND
WESTERN HILL COUNTRY. 20-FOOT WINDS OF 10 TO 15 MPH ARE EXPECTED
WITH GUSTS TO 25 MPH POSSIBLE. EXPECT 20-FOOT WINDS TO SUBSIDE TO
AROUND 10 MPH BY 8 PM THIS EVENING.

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.

$$
1 follow-up statement
000 
WWUS84 KEWX 072133
RFWEWX

RED FLAG WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
333 PM CST SUN JAN 7 2007

...WINDY AND DRY CONDITIONS WILL CONTINUE TO WARRANT A RED FLAG
WARNING FOR WESTERN AND CENTRAL PARTS OF SOUTH CENTRAL TEXAS THIS
EVENING...

.HIGH PRESSURE BUILDING INTO SOUTH CENTRAL TEXAS HAS CREATED
BREEZY AND DRY CONDITIONS THIS AFTERNOON THAT WILL CONTINUE INTO
THE EVENING. THE WINDS WILL SUBSIDE GRADUALLY DURING THE
EVENING...BUT THE DRY CONDITIONS WILL CONTINUE THROUGH AT LEAST
TUESDAY.

TXZ171>173-183>192-202>208-217>221-228-080200-
/O.CON.KEWX.FW.W.0001.000000T0000Z-070108T0200Z/
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-
333 PM CST SUN JAN 7 2007

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CST THIS
EVENING...

DAYTIME RELATIVE HUMIDITIES HAVE DROPPED INTO THE 25 TO 35 PERCENT
RANGE THIS AFTERNOON ACROSS MUCH OF SOUTH CENTRAL TEXAS AND THE
HILL COUNTRY. 20-FOOT WINDS OF 10 TO 20 MPH ARE EXPECTED WITH
GUSTS TO 25 MPH POSSIBLE THE REMAINDER OF THE EVENING. EXPECT 20-
FOOT WINDS TO SUBSIDE TO AROUND 10 TO 15 MPH AFTER 8 PM THIS
EVENING AS HUMIDITIES SLOWLY RISE.

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, 2007Every red flag warning in 2007

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.