Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 12, NWS San Angelo, TX

April 7, 2012Irion County, Texas

NWS San Angelo, TX issued this tornado warning at Apr 7, 2012, 8:02 PM CDT for Irion County, Texas. It was in force for 13 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 7, 2012, 8:02 PM CDT (01:02 UTC)
Expired: Apr 7, 2012, 8:15 PM CDT
In force: 13 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon

County Irion County, TX

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, 1.0 hours before the alert went out and 104 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.

368 
WFUS54 KSJT 080102
TORSJT
TXC235-080115-
/O.NEW.KSJT.TO.W.0012.120408T0102Z-120408T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
802 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...

* UNTIL 815 PM CDT

* AT 757 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS OVER EXTREME NORTHWESTERN IRION COUNTY...OR 24 MILES
  NORTHEAST OF BIG LAKE...MOVING SOUTH SOUTHWEST 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 TENNIS BALL SIZE.
  DAMAGING STRAIGHT LINE WINDS IN EXCESS OF 60 MPH.
  POTENTIALLY DEADLY LIGHTNING.

*THE TORNADO WILL REMAIN OVER MAINLY RURAL AREAS OF...
  NORTHWESTERN IRION COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3153 10127 3153 10118 3152 10118 3142 10122
      3141 10127 3152 10127
TIME...MOT...LOC 0102Z 355DEG 11KT 3148 10125

$$

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, 7:32 PM CDT	Tornado Warning	SJT	Irion, Sterling, Tom Green	28 min
Apr 7, 7:58 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Irion, Sterling, Tom Green	47 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; the sounding from the Mesonet's radiosonde archive.