Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 13, NWS San Angelo, TX

April 24, 2011Taylor County, Texas

NWS San Angelo, TX issued this tornado warning at Apr 24, 2011, 4:03 PM CDT for Taylor County, Texas. It was in force for 42 min. 8 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, 4:03 PM CDT (21:03 UTC)
Expired: Apr 24, 2011, 4:45 PM CDT
In force: 42 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon

County Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 44 km from the middle of the area, began a volume at 21:05 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, 4:24 PM CDT	TORNADO	3 N Potosi, TX
Apr 24, 4:30 PM CDT	HAIL 1.5	3 Ne Abilene, TX	NEAR ACU CAMPUS
Apr 24, 4:32 PM CDT	HAIL 2	Dyess Afb, TX
Apr 24, 4:34 PM CDT	TORNADO	3 E Potosi, TX
Apr 24, 4:40 PM CDT	HAIL 2.5	Abilene, TX	AT THE ABILENE AIRPORT REPORTED BY ATCT OBSERVER
Apr 24, 4:40 PM CDT	HAIL 2.75	Abilene, TX
Apr 24, 4:45 PM CDT	HAIL 4.5	1 S Abilene, TX
Apr 24, 4:50 PM CDT	HAIL 2.75	Abilene, TX

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, 2:19 PM CDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.1 hours before the alert went out and 230 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: 1821 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 577 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

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

629 
WFUS54 KSJT 242103
TORSJT
TXC441-242145-
/O.NEW.KSJT.TO.W.0013.110424T2103Z-110424T2145Z/

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

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN TAYLOR COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 445 PM CDT

* AT 401 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS NEAR BUFFALO GAP...OR 11 MILES SOUTHWEST OF ABILENE...
  MOVING NORTHEAST AT 20 MPH.

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

* THE TORNADO IS EXPECTED TO BE NEAR...
  POTOSI BY 430 PM CDT...
  ABILENE BY 430 PM CDT...
  HAMBY BY 445 PM CDT...

THIS INCLUDES INTERSTATE 20 BETWEEN MILE MARKERS 278 AND 292.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY
EVENING FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3246 9963 3246 9962 3227 9963 3226 9986
      3248 9987 3252 9975 3252 9974 3252 9963
TIME...MOT...LOC 2102Z 241DEG 15KT 3231 9982

$$

1 follow-up statement

851 
WWUS54 KSJT 242115
SVSSJT

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

TXC441-242145-
/O.CON.KSJT.TO.W.0013.000000T0000Z-110424T2145Z/
TAYLOR TX-
415 PM CDT SUN APR 24 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
NORTHEASTERN TAYLOR COUNTY...

AT 414 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD!
THIS FUNNEL CLOUD WAS LOCATED NEAR POTOSI...OR 8 MILES SOUTH OF
ABILENE...MOVING NORTHEAST AT 15 MPH.

  STORM HAZARDS INCLUDE...
  DANGEROUS TORNADIC WINDS.
  LARGE DAMAGING HAIL UP TO TENNIS 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...
  POTOSI BY 430 PM CDT...
  ABILENE BY 435 PM CDT...

THIS INCLUDES INTERSTATE 20 BETWEEN MILE MARKERS 278 AND 292.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY
EVENING FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3252 9963 3242 9962 3227 9963 3229 9980
      3248 9987 3252 9975
TIME...MOT...LOC 2115Z 241DEG 15KT 3234 9976

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 9:00 PM CDT	Severe Thunderstorm Warning	SJT	Brown	45 min
Apr 23, 9:39 PM CDT	Severe Thunderstorm Warning	SJT	Brown	51 min
Apr 23, 10:29 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	46 min
Apr 24, 1:35 PM CDT	Fire Weather Watch	SJT	Coke, Crockett, Fisher, Haskell, Irion, Jones and 5 more	7 hr
Apr 24, 3:12 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	63 min
Apr 24, 3:35 PM CDT	Tornado Warning	SJT	Callahan, Shackelford	25 min
Apr 24, 3:48 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	42 min
Apr 24, 3:52 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Nolan, Taylor	38 min
Apr 24, 3:56 PM CDT	Tornado Warning	SJT	Shackelford	49 min
Apr 24, 4:22 PM CDT	Tornado Warning	SJT	Callahan, Jones, Taylor	38 min
Apr 24, 4:27 PM CDT	Tornado Warning	SJT	Callahan, Shackelford, Taylor	48 min
Apr 24, 4:44 PM CDT	Areal Flood Advisory	SJT	Taylor	91 min
Apr 24, 5:00 PM CDT	Tornado Warning	SJT	Callahan, Shackelford, Taylor	45 min
Apr 24, 5:10 PM CDT	Tornado Warning	SJT	Callahan, Shackelford	20 min
Apr 24, 5:25 PM CDT	Tornado Warning	SJT	Callahan, Shackelford	65 min
Apr 24, 5:28 PM CDT	Flash Flood Warning	SJT	Callahan, Shackelford, Taylor	3 hr
Apr 24, 5:31 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford, Taylor	44 min
Apr 24, 5:52 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Runnels, Taylor	38 min
Apr 24, 6:14 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford, Taylor	61 min
Apr 24, 6:33 PM CDT	Tornado Warning	SJT	Callahan, Coleman, Runnels, Taylor	57 min
Apr 24, 6:46 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Runnels, Taylor	33 min

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.