Alert archive / Texas / Tornado Warnings in 2007

Tornado Warning 21, NWS Austin/San Antonio, TX

April 25, 2007Atascosa County, Bexar County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Apr 25, 2007, 12:08 AM CDT for Atascosa County, Bexar County, Texas. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 25, 2007, 12:08 AM CDT (05:08 UTC)
Expired: Apr 25, 2007, 12:45 AM CDT
In force: 37 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

Counties Atascosa County, TX, Bexar County, TX

The radar

The Austin/San Antonio radar (KEWX), 81 km from the middle of the area, began a volume at 05:10 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.

What was reported inside it

Time	Report	Where	Remark
Apr 25, 12:15 AM CDT	TSTM WND DMG	4 S Somerset, TX	MOBILE HOME ROLLED OVER. TREES DOWN ON ROOFS. FEW INJURIES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 24, 10:53 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 5.1 hours before the alert went out and 210 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2037 J/kg
Mixed-layer CIN: -328 J/kg
Mixed-layer LCL: 785 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 172 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KEWX 250508
TOREWX
TXC013-029-250545-
/O.NEW.KEWX.TO.W.0021.070425T0508Z-070425T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1208 AM CDT WED APR 25 2007

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* TORNADO WARNING FOR...
  ATASCOSA COUNTY IN SOUTH CENTRAL TEXAS...
  BEXAR COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 1245 AM CDT

* AT 1206 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
  DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7
  MILES SOUTHWEST OF SOMERSET...OR ABOUT 10 MILES EAST OF DEVINE...
  MOVING EAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  SOMERSET BY 1215 AM CDT...

IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT WEDNESDAY MORNING
FOR SOUTH CENTRAL TEXAS.

LAT...LON 2927 9879 2910 9879 2911 9847 2936 9843

$$

2 follow-up statements

000 
WWUS54 KEWX 250514
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1213 AM CDT WED APR 25 2007

TXC013-029-250545-
/O.CON.KEWX.TO.W.0021.000000T0000Z-070425T0545Z/
BEXAR TX-ATASCOSA TX-
1213 AM CDT WED APR 25 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR ATASCOSA
AND BEXAR COUNTIES...

AT 1210 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR SOMERSET...OR
ABOUT 13 MILES EAST OF DEVINE...MOVING EAST AT 45 MPH.

THE TORNADO WILL BE NEAR...
  SOMERSET AT 1218 AM CDT
  MITCHELL LAKE AT 1230 AM CDT

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT WEDNESDAY MORNING
FOR SOUTH CENTRAL TEXAS.

LAT...LON 2925 9874 2913 9870 2917 9844 2933 9843

$$

000 
WWUS54 KEWX 250529
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1229 AM CDT WED APR 25 2007

TXC013-250539-
/O.CAN.KEWX.TO.W.0021.000000T0000Z-070425T0545Z/
ATASCOSA TX-
1229 AM CDT WED APR 25 2007

...THE TORNADO WARNING FOR ATASCOSA COUNTY IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT WEDNESDAY MORNING
FOR SOUTH CENTRAL TEXAS.

LAT...LON 2930 9852 2920 9853 2926 9830 2936 9822
      2942 9829

$$

TXC029-250545-
/O.CON.KEWX.TO.W.0021.000000T0000Z-070425T0545Z/
BEXAR TX-
1229 AM CDT WED APR 25 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR BEXAR
COUNTY...

AT 1227 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED 
TO INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 9 MILES 
WEST OF ELMENDORF...OR ABOUT 13 MILES SOUTH OF SAN ANTONIO...MOVING 
NORTHEAST AT 45 MPH.

THE TORNADO WILL BE NEAR...
  ELMENDORF BY 1235 AM CDT...
  CALAVERAS LAKE BY 1240 AM CDT...

IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT WEDNESDAY MORNING
FOR SOUTH CENTRAL TEXAS.

LAT...LON 2930 9852 2920 9853 2926 9830 2936 9822
      2942 9829

$$

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 24, 7:33 PM CDT	Tornado Warning	EWX	Dimmit	57 min
Apr 24, 7:37 PM CDT	Severe Thunderstorm Warning	EWX	Zavala	53 min
Apr 24, 8:26 PM CDT	Tornado Warning	EWX	Dimmit	34 min
Apr 24, 8:33 PM CDT	Severe Thunderstorm Warning	EWX	Frio, Zavala	57 min
Apr 24, 9:11 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde	64 min
Apr 24, 9:29 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	31 min
Apr 24, 9:46 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde, Zavala	59 min
Apr 24, 10:07 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	53 min
Apr 24, 10:21 PM CDT	Flash Flood Warning	EWX	Maverick, Uvalde, Zavala	4 hr
Apr 24, 11:00 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	46 min
Apr 24, 11:11 PM CDT	Severe Thunderstorm Warning	EWX	Medina	64 min
Apr 24, 11:18 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit	57 min
Apr 24, 11:43 PM CDT	Severe Thunderstorm Warning	EWX	Frio	48 min
Apr 24, 11:51 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar	54 min
Apr 25, 12:06 AM CDT	Flash Flood Warning	EWX	Bexar, Medina	114 min
Apr 25, 12:21 AM CDT	Severe Thunderstorm Warning	EWX	Comal, Guadalupe	54 min
Apr 25, 12:38 AM CDT	Severe Thunderstorm Warning	EWX	Bexar, Wilson	48 min
Apr 25, 1:23 AM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Gonzales	53 min
Apr 25, 1:36 AM CDT	Severe Thunderstorm Warning	EWX	Fayette, Lavaca	54 min
Apr 25, 1:46 AM CDT	Tornado Warning	EWX	Fayette, Gonzales	29 min
Apr 25, 2:03 AM CDT	Tornado Warning	EWX	Lavaca	33 min
Apr 25, 2:06 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop	24 min
Apr 25, 2:53 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa	37 min
Apr 25, 3:54 AM CDT	Severe Thunderstorm Warning	EWX	DeWitt	36 min
Apr 25, 4:26 AM CDT	Severe Thunderstorm Warning	EWX	DeWitt	19 min

Nearby

Tornado Warnings in Texas, 2007 Every tornado warning in 2007 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.