Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 4, NWS Midland/Odessa, TX

April 7, 2012Mitchell County, Texas

NWS Midland/Odessa, TX issued this tornado warning at Apr 7, 2012, 4:41 PM CDT for Mitchell County, Texas. It was in force for 34 min. 1 report 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, 4:41 PM CDT (21:41 UTC)
Expired: Apr 7, 2012, 5:15 PM CDT
In force: 34 min
Issued by: NWS Midland/Odessa, TX
Area: Storm-based polygon

County Mitchell County, TX

What was reported inside it

Time	Report	Where	Remark
Apr 7, 4:48 PM CDT	TORNADO	17 N Sterling City, TX	TORNADO ON THE STERLING-MITCHELL COUNTY LINE. RELAYED THROUGH WFO MIDLAND.

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 12:00Z, 9.7 hours before the alert went out and 116 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: 993 J/kg
Mixed-layer CIN: -242 J/kg
Mixed-layer LCL: 1189 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

731 
WFUS54 KMAF 072141
TORMAF
TXC335-072215-
/O.NEW.KMAF.TO.W.0004.120407T2141Z-120407T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
441 PM CDT SAT APR 7 2012

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN MITCHELL COUNTY IN WEST TEXAS...

* UNTIL 515 PM CDT

* AT 438 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A TORNADO OVER EXTREME SOUTHWESTERN MITCHELL COUNTY...OR
  18 MILES NORTH OF STERLING CITY...MOVING SOUTH AT 5 MPH.

* THE TORNADO WILL AFFECT THE FOLLOWING LOCATIONS...  SOUTHWESTERN   
  MITCHELL COUNTY NEAR STATE HIGHWAY 163 NEAR THE MITCHELL/STERLING
  COUNTY BORDER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO HAS BEEN CONFIRMED... TAKE COVER IN A STURDY BUILDING NOW.
MOBILE HOMES AND VEHICLES ARE NOT SAFE.

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

&&

LAT...LON 3208 10084 3208 10117 3209 10118 3222 10106
      3210 10082
TIME...MOT...LOC 2140Z 010DEG 5KT 3209 10105

$$

1 follow-up statement

969 
WWUS54 KMAF 072207
SVSMAF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
507 PM CDT SAT APR 7 2012

TXC335-072216-
/O.EXP.KMAF.TO.W.0004.000000T0000Z-120407T2215Z/
MITCHELL TX-
507 PM CDT SAT APR 7 2012

...THE TORNADO WARNING FOR SOUTHWESTERN MITCHELL COUNTY WILL EXPIRE
AT 515 PM CDT...

AT 506 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE STORM THAT PROMPTED THE TORNADO WARNING HAD EXITED THE WARNED 
AREA. THEREFORE THE TORNADO WARNING WILL BE ALLOWED TO EXPIRE. A 
SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MITCHELL COUNTY
REMAINS IN EFFECT UNTIL 600 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3208 10084 3208 10117 3209 10118 3222 10106
      3210 10082
TIME...MOT...LOC 2206Z 010DEG 5KT 3205 10106

$$

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 6, 8:52 PM CDT	Severe Thunderstorm Warning	MAF	Crane	23 min
Apr 6, 9:15 PM CDT	Severe Thunderstorm Warning	MAF	Crane	60 min
Apr 6, 10:13 PM CDT	Severe Thunderstorm Warning	MAF	Crane, Upton	62 min
Apr 7, 3:07 PM CDT	Severe Thunderstorm Warning	MAF	Mitchell	53 min
Apr 7, 3:58 PM CDT	Severe Thunderstorm Warning	MAF	Mitchell	62 min
Apr 7, 4:16 PM CDT	Tornado Warning	MAF	Mitchell	29 min
Apr 7, 4:43 PM CDT	Severe Thunderstorm Warning	MAF	Brewster, Pecos	62 min
Apr 7, 4:58 PM CDT	Severe Thunderstorm Warning	MAF	Mitchell	62 min
Apr 7, 5:29 PM CDT	Areal Flood Advisory	MAF	Mitchell	3 hr
Apr 7, 5:34 PM CDT	Severe Thunderstorm Warning	MAF	Brewster	56 min
Apr 7, 5:59 PM CDT	Areal Flood Advisory	MAF	Pecos	3 hr
Apr 7, 6:01 PM CDT	Severe Thunderstorm Warning	MAF	Crane	31 min
Apr 7, 6:17 PM CDT	Severe Thunderstorm Warning	MAF	Glasscock	28 min
Apr 7, 6:43 PM CDT	Severe Thunderstorm Warning	MAF	Ector	62 min
Apr 7, 6:45 PM CDT	Areal Flood Advisory	MAF	Brewster	3 hr

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.