Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 11, NWS San Angelo, TX

April 7, 2012Irion County, Sterling County, Tom Green County, Texas

NWS San Angelo, TX issued this tornado warning at Apr 7, 2012, 7:32 PM CDT for Irion County, Sterling County, Tom Green County, Texas. It was in force for 28 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 7, 2012, 7:32 PM CDT (00:32 UTC)
Expired: Apr 7, 2012, 8:00 PM CDT
In force: 28 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon

Counties Irion County, TX, Sterling County, TX, Tom Green County, TX

What was reported inside it

Time	Report	Where	Remark
Apr 7, 7:44 PM CDT	HAIL 2.75	18 Sw Sterling City, TX	TORNADO WAS RAIN WRAPPED AND REPORTED ON THE GROUND AT 742 PM.
Apr 7, 7:44 PM CDT	TORNADO	18 Sw Sterling City, TX	TORNADO WAS RAIN WRAPPED AND REPORTED ON THE GROUND AT 742 PM.

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 7, 3:01 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 0.5 hours before the alert went out and 103 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: 190 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 3049 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -40 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

353 
WFUS54 KSJT 080032
TORSJT
TXC235-431-451-080100-
/O.NEW.KSJT.TO.W.0011.120408T0032Z-120408T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
732 PM CDT SAT APR 7 2012

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN IRION COUNTY IN WEST CENTRAL TEXAS...
  SOUTHWESTERN STERLING COUNTY IN WEST CENTRAL TEXAS...
  EXTREME WEST CENTRAL TOM GREEN COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 800 PM CDT

* AT 729 PM CDT...A FUNNEL CLOUD WAS OVER SOUTHWESTERN STERLING
  COUNTY...OR 18 MILES SOUTHWEST OF STERLING CITY...MOVING SOUTH AT
  15 MPH. THIS STORM HAS A HISTORY OF PRODUCING A TORNADO AND MAY
  PRODUCE A TORNADO AT ANY TIME. 

  IN ADDITION TO DANGEROUS TORNADIC WINDS...OTHER HAZARDS INCLUDE...
  LARGE DAMAGING HAIL UP TO GOLF BALL SIZE.
  DAMAGING STRAIGHT LINE WINDS IN EXCESS OF 60 MPH.
  POTENTIALLY DEADLY LIGHTNING.

*THE TORNADO WILL REMAIN OVER MAINLY RURAL AREAS OF...
  SOUTHWESTERN STERLING...WEST CENTRAL TOM GREEN AND NORTHWESTERN
  IRION COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY EVENING FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3169 10128 3170 10107 3144 10104 3145 10127
      3149 10128
TIME...MOT...LOC 0032Z 355DEG 11KT 3160 10117

$$
DANIELS

1 follow-up statement

640 
WWUS54 KSJT 080048
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
748 PM CDT SAT APR 7 2012

TXC235-431-451-080100-
/O.CON.KSJT.TO.W.0011.000000T0000Z-120408T0100Z/
IRION TX-STERLING TX-TOM GREEN TX-
748 PM CDT SAT APR 7 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR EXTREME
WEST CENTRAL TOM GREEN...SOUTHWESTERN STERLING AND NORTHWESTERN IRION
COUNTIES...

AT 743 PM CDT...SPOTTER CONTINUES TO REPORT A TORNADO OVER EXTREME SOUTHWEST 
STERLING COUNTY...OR 18 MILES SOUTHWEST OF STERLING CITY...MOVING 
SOUTH AT 15 MPH.

  STORM HAZARDS INCLUDE...
  DANGEROUS TORNADIC WINDS.
  LARGE DAMAGING HAIL UP TO BASEBALL SIZE. HAIL
  DAMAGING WINDS IN EXCESS OF 60 MPH.

  WITH POSSIBLE STORM IMPACTS...
  OVERTURNED VEHICLES...
  DAMAGE TO TREES...SOME MAY BE UPROOTED...
  DAMAGE TO HOMES...MAY DESTROY MANUFACTURED HOMES...
  EXTREME VEHICLE DAMAGE...
  EXTREME ROOF DAMAGE...
  BROKEN WINDOWS ON VEHICLES AND HOMES...
  SERIOUSLY INJURE PEOPLE...PETS...AND LIVESTOCK LEFT UNPROTECTED...
  DAMAGE TO TREE LIMBS...
  LIGHT OBJECTS BLOWN AROUND...

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF
SOUTHWESTERN STERLING...WESTERN TOM GREEN AND NORTHWESTERN IRION
COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY EVENING FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3169 10128 3170 10107 3144 10104 3145 10127
      3149 10128
TIME...MOT...LOC 0047Z 355DEG 11KT 3155 10117

$$
DANIELS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 7:08 PM CDT	Tornado Warning	SJT	Sterling	22 min
Apr 7, 7:10 PM CDT	Special Weather Statement	SJT	Coke	50 min
Apr 7, 7:13 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Irion, Sterling, Tom Green	47 min
Apr 7, 7:27 PM CDT	Flash Flood Warning	SJT	Sterling, Tom Green	2 hr
Apr 7, 7:30 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Runnels, Taylor	45 min
Apr 7, 7:30 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Runnels, Taylor, Tom Green	45 min
Apr 7, 7:58 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Irion, Sterling, Tom Green	47 min
Apr 7, 8:02 PM CDT	Tornado Warning	SJT	Irion	13 min
Apr 7, 8:14 PM CDT	Special Weather Statement	SJT	Coleman	46 min
Apr 7, 8:18 PM CDT	Special Weather Statement	SJT	Coke, Runnels, Tom Green	42 min
Apr 7, 8:22 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Taylor	38 min
Apr 7, 8:51 PM CDT	Special Weather Statement	SJT	Irion	54 min
Apr 7, 8:56 PM CDT	Special Weather Statement	SJT	Callahan, Coleman	64 min
Apr 7, 9:01 PM CDT	Special Weather Statement	SJT	Concho, Tom Green	59 min
Apr 7, 9:27 PM CDT	Areal Flood Advisory	SJT	Callahan, Coleman, Taylor	2 hr
Apr 7, 9:30 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	45 min
Apr 7, 9:44 PM CDT	Special Weather Statement	SJT	Irion, Schleicher	61 min
Apr 7, 9:57 PM CDT	Special Weather Statement	SJT	Concho, Menard	63 min
Apr 7, 10:05 PM CDT	Special Weather Statement	SJT	Callahan	55 min
Apr 7, 10:14 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	46 min
Apr 7, 10:59 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	46 min
Apr 7, 11:05 PM CDT	Special Weather Statement	SJT	Schleicher, Sutton	55 min
Apr 7, 11:25 PM CDT	Severe Thunderstorm Warning	SJT	Crockett, Schleicher, Sutton	50 min
Apr 8, 3:39 AM CDT	Severe Thunderstorm Warning	SJT	Kimble	36 min

Nearby

Tornado Warnings in Texas, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.