Alert archive / Texas / Tornado Warnings in 2006

Tornado Warning 19, NWS Austin/San Antonio, TX

April 21, 2006Bandera County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Apr 21, 2006, 1:34 AM CDT for Bandera County, Texas. It was in force for 38 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 21, 2006, 1:34 AM CDT (06:34 UTC)
Expired: Apr 21, 2006, 2:12 AM CDT
In force: 38 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Bandera County, TX

The radar

The Austin/San Antonio radar (KEWX), 102 km from the middle of the area, began a volume at 06:37 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 00:00Z, 6.6 hours before the alert went out and 176 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: 2847 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 913 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KEWX 210634
TOREWX
TXC019-210730-
/O.NEW.KEWX.TO.W.0019.060421T0634Z-060421T0730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
134 AM CDT FRI APR 21 2006

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* TORNADO WARNING FOR THE FOLLOWING COUNTIES...
  BANDERA

* UNTIL 230 AM CDT

* AT 133 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES
  NORTHEAST OF MEDINA...MOVING SOUTHEAST AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BANDERA AND PIPE CREEK.

THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A
BUILDING IN AN INTERIOR HALLWAY...BATHROOM...OR CLOSET. COVER
YOURSELF WITH BLANKETS...PILLOWS OR EVEN A MATTRESS FOR BETTER
PROTECTION.

LAT...LON 2991 9921 2986 9936 2962 9906 2962 9888
      2972 9879

$$

2 follow-up statements

000 
WWUS54 KEWX 210644
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
143 AM CDT FRI APR 21 2006

TXC019-210730-
/O.CON.KEWX.TO.W.0019.000000T0000Z-060421T0730Z/
BANDERA TX-
143 AM CDT FRI APR 21 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR BANDERA
COUNTY...

AT 141 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES EAST OF
MEDINA...MOVING SOUTHEAST AT 35 MPH.

THIS STORM WILL APPROACH THE TOWN OF BANDERA BY 2 AM AND THE 
COMMUNITY OF PIPE CREEK BY 210 AM.

THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A
BUILDING IN AN INTERIOR HALLWAY...BATHROOM...OR CLOSET. COVER
YOURSELF WITH BLANKETS...PILLOWS OR EVEN A MATTRESS FOR BETTER
PROTECTION.

LAT...LON 2991 9921 2986 9936 2962 9906 2962 9888
      2972 9879

$$

000 
WWUS54 KEWX 210712
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
210 AM CDT FRI APR 21 2006

TXC019-210720-
/O.CAN.KEWX.TO.W.0019.000000T0000Z-060421T0730Z/
BANDERA TX-
210 AM CDT FRI APR 21 2006

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

THE THUNDERSTORM PROMPTING THE TORNADO WARNING APPEARS TO HAVE 
FALLEN BELOW SEVERE LEVELS. SMALL HAIL AND WIND GUSTS TO 45 MPH WILL 
REMAIN POSSIBLE WITH THIS THUNDERSTORM AS IT MOVES ACROSS EASTERN 
BANDERA COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT FRIDAY
MORNING FOR SOUTH CENTRAL TEXAS.

LAT...LON 2991 9921 2986 9936 2962 9906 2962 9888
      2972 9879

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 7:21 PM CDT	Severe Thunderstorm Warning	EWX	Williamson	39 min
Apr 20, 7:54 PM CDT	Severe Thunderstorm Warning	EWX	Williamson	36 min
Apr 20, 8:45 PM CDT	Severe Thunderstorm Warning	EWX	Travis, Williamson	60 min
Apr 20, 10:56 PM CDT	Flash Flood Warning	EWX	Maverick	3 hr
Apr 20, 11:40 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Maverick, Uvalde	65 min
Apr 21, 12:59 AM CDT	Severe Thunderstorm Warning	EWX	Kerr	61 min
Apr 21, 1:08 AM CDT	Tornado Warning	EWX	Kerr	37 min
Apr 21, 1:14 AM CDT	Severe Thunderstorm Warning	EWX	Gillespie, Kendall	61 min
Apr 21, 2:24 AM CDT	Severe Thunderstorm Warning	EWX	Comal, Kendall	66 min
Apr 21, 4:51 AM CDT	Severe Thunderstorm Warning	EWX	Lavaca	47 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.