Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 20, NWS San Angelo, TX

April 24, 20114 counties in Texas

NWS San Angelo, TX issued this tornado warning at Apr 24, 2011, 7:28 PM CDT for 4 counties in Texas. It was in force for 47 min. 2 reports 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 24, 2011, 7:28 PM CDT (00:28 UTC)
Expired: Apr 24, 2011, 8:15 PM CDT
In force: 47 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon

Counties Callahan County, TX, Coleman County, TX, Runnels County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 51 km from the middle of the area, began a volume at 00:29 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 24, 7:57 PM CDT	HAIL 2.5	5 W Novice, TX	TENNIS BALL SIZE HAIL REPORTED 5 MILES WEST OF NOVICE
Apr 24, 8:10 PM CDT	HAIL 2.5	3 W Novice, TX	GOLF BALL TO TENNIS SIZE HAIL REPORTED 3 MILES WEST OF NOVICE.

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, 4:54 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.5 hours before the alert went out and 211 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: 1679 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1811 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

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

260 
WFUS54 KSJT 250028
TORSJT
TXC059-083-399-441-250115-
/O.NEW.KSJT.TO.W.0020.110425T0028Z-110425T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
728 PM CDT SUN APR 24 2011

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN TAYLOR COUNTY IN WEST CENTRAL TEXAS...
  SOUTHERN CALLAHAN COUNTY IN WEST CENTRAL TEXAS...
  NORTHEASTERN RUNNELS COUNTY IN WEST CENTRAL TEXAS...
  NORTHERN COLEMAN COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 815 PM CDT

* AT 725 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS 5 MILES SOUTHEAST OF LAWN...OR 18 MILES NORTHEAST OF
  WINTERS...MOVING EAST AT 25 MPH.

  IN ADDITION TO DANGEROUS TORNADIC WINDS...OTHER HAZARDS INCLUDE...
  LARGE DAMAGING HAIL UP TO GOLF BALL SIZE.
  POTENTIALLY DEADLY LIGHTNING.

* THE TORNADO IS EXPECTED TO BE NEAR...
  OPLIN BY 740 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL 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 MIDNIGHT CDT MONDAY MORNING
FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3209 9912 3209 9920 3190 9920 3198 9993
      3220 9988 3228 9911
TIME...MOT...LOC 0028Z 267DEG 20KT 3209 9965

$$

1 follow-up statement

044 
WWUS54 KSJT 250047
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
747 PM CDT SUN APR 24 2011

TXC059-083-399-441-250115-
/O.CON.KSJT.TO.W.0020.000000T0000Z-110425T0115Z/
TAYLOR TX-CALLAHAN TX-RUNNELS TX-COLEMAN TX-
747 PM CDT SUN APR 24 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR NORTHERN
COLEMAN...NORTHEASTERN RUNNELS...SOUTHERN CALLAHAN AND SOUTHEASTERN
TAYLOR COUNTIES...

AT 746 PM CDT...THE MOST DANGEROUS PART OF THE STORM WAS LOCATED NEAR
LAKE COLEMAN...OR 20 MILES NORTH OF COLEMAN...MOVING EAST AT 25 MPH.

  STORM HAZARDS INCLUDE...
  DANGEROUS TORNADIC WINDS.
  LARGE DAMAGING HAIL UP TO GOLF BALL SIZE.

  WITH POSSIBLE STORM IMPACTS...
  OVERTURNED VEHICLES...
  DAMAGE TO TREES...SOME MAY BE UPROOTED...
  DAMAGE TO HOMES...MAY DESTROY MANUFACTURED HOMES.
  DENTED VEHICLES
  MODERATE ROOF DAMAGE
  MAY BREAK WINDOWS ON VEHICLES AND HOMES
  MAY INJURE PEOPLE...PETS...AND LIVESTOCK LEFT UNPROTECTED.

THE TORNADO WILL BE NEAR...
  US-283 NEAR THE COLEMAN-CALLAHAN COUNTY LINE AND THE INTERSECTION
  OF US-283 AND HIGHWAY 36 BY 805 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL 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 MIDNIGHT CDT MONDAY MORNING
FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3197 9983 3209 9976 3220 9982 3228 9911
      3209 9912 3209 9920 3190 9920
TIME...MOT...LOC 0048Z 267DEG 20KT 3210 9952

$$

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 24, 7:06 PM CDT	Severe Thunderstorm Warning	SJT	Callahan	39 min
Apr 24, 8:03 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Runnels	57 min
Apr 24, 8:07 PM CDT	Tornado Warning	SJT	Coleman	38 min
Apr 24, 8:37 PM CDT	Red Flag Warning	SJT	Brown, Callahan, Coke, Coleman, Concho, Crockett and 15 more	23 hr
Apr 24, 8:41 PM CDT	Severe Thunderstorm Warning	SJT	Callahan	49 min
Apr 24, 8:47 PM CDT	Tornado Warning	SJT	Brown, Coleman	43 min
Apr 24, 9:26 PM CDT	Tornado Warning	SJT	Brown, Coleman	64 min
Apr 24, 10:07 PM CDT	Severe Thunderstorm Warning	SJT	Brown	38 min
Apr 24, 10:41 PM CDT	Severe Thunderstorm Warning	SJT	Brown	34 min
Apr 24, 11:18 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Sterling	42 min
Apr 24, 11:49 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Runnels, Taylor	41 min
Apr 25, 12:06 AM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	54 min
Apr 25, 12:12 AM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	48 min
Apr 25, 12:23 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Runnels, Taylor	67 min
Apr 25, 1:12 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman	78 min
Apr 25, 12:48 PM CDT	Lake Wind Advisory	SJT	Brown, Coke, Coleman, Concho, Haskell, Jones and 5 more	5 hr
Apr 25, 3:17 PM CDT	Fire Weather Watch	SJT	Brown, Coke, Coleman, Concho, Crockett, Fisher and 12 more	13 hr

Nearby

Tornado Warnings in Texas, 2011 Every tornado warning in 2011 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.