Alert archive / Texas / Tornado Warnings in 2006

Tornado Warning 20, NWS Austin/San Antonio, TX

April 25, 2006Medina County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Apr 25, 2006, 5:39 PM CDT for Medina County, Texas. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 25, 2006, 5:39 PM CDT (22:39 UTC)
Expired: Apr 25, 2006, 6:15 PM CDT
In force: 36 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Medina County, TX

The radar

The Laughlin AFB radar (KDFX), 94 km from the middle of the area, began a volume at 22:41 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, 10.7 hours before the alert went out and 148 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: 1866 J/kg
Mixed-layer CIN: -326 J/kg
Mixed-layer LCL: 1057 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KEWX 252239
TOREWX
TXC325-252315-
/O.NEW.KEWX.TO.W.0020.060425T2239Z-060425T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
539 PM CDT TUE APR 25 2006

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* TORNADO WARNING FOR THE FOLLOWING COUNTIES...
  MEDINA

* UNTIL 615 PM CDT

* AT 536 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER MEDINA
  COUNTY...MOVING SOUTHEAST AT 25 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

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.

LAT...LON 2931 9941 2910 9941 2909 9918 2931 9918

$$

1 follow-up statement

000 
WWUS54 KEWX 252307
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
608 PM CDT TUE APR 25 2006

TXC325-252315-
/O.CON.KEWX.TO.W.0020.000000T0000Z-060425T2315Z/
MEDINA TX-
608 PM CDT TUE APR 25 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR MEDINA
COUNTY...

AT 600 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED OVER MEDINA COUNTY...OR
ABOUT 17 MILES SOUTHWEST OF HONDO...MOVING SOUTHEAST AT 25 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.

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.

LAT...LON 2923 9941 2910 9941 2909 9918 2916 9914

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 4:07 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde	53 min
Apr 25, 4:59 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde	55 min
Apr 25, 5:34 PM CDT	Severe Thunderstorm Warning	EWX	Medina	41 min
Apr 25, 5:51 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio	54 min
Apr 25, 6:40 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio	35 min

Nearby

Tornado Warnings in Texas, 2006 Every tornado warning in 2006 Tornadoes in 2006

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.