Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 64, NWS Midland/Odessa, TX

April 11, 2012Pecos County, Reeves County, Ward County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Apr 11, 2012, 4:56 PM CDT for Pecos County, Reeves County, Ward County, Texas. It was in force for 64 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 11, 2012, 4:56 PM CDT (21:56 UTC)
Expired
Apr 11, 2012, 6:00 PM CDT
In force
64 min
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon

Counties Pecos County, TX, Reeves County, TX, Ward County, TX

The radar

The Midland/Odessa radar (KMAF), 136 km from the middle of the area, began a volume at 21:59 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 11, 3:43 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 9.9 hours before the alert went out and 136 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-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 2012-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 60 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 12:00Z on 2012-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
60 J/kg
Mixed-layer CIN
-326 J/kg
Mixed-layer LCL
1194 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

131 
WUUS54 KMAF 112156
SVRMAF
TXC371-389-475-112300-
/O.NEW.KMAF.SV.W.0064.120411T2156Z-120411T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
456 PM CDT WED APR 11 2012

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN PECOS COUNTY IN SOUTHWEST TEXAS...
  EXTREME SOUTHEASTERN WARD COUNTY IN WEST TEXAS...
  SOUTHEASTERN REEVES COUNTY IN SOUTHWEST TEXAS...

* UNTIL 600 PM CDT

* AT 450 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 19   
  MILES SOUTHWEST OF COYANOSA...OR 22 MILES WEST OF FORT STOCKTON... 
  MOVING NORTHEAST AT 20 MPH. ADDITIONAL STORMS ARE FORMING 40 MILES 
  SOUTHWEST OF FORT STOCKTON AND MAY BECOME SEVERE.

* THE SEVERE THUNDERSTORM WILL AFFECT THE FOLLOWING LOCATIONS...
  NORTHWESTERN PECOS COUNTY...
  NORTHERN PECOS COUNTY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WARNING MEANS THAT SEVERE WEATHER IS OCCURRING
OR IS IMMINENT. WIND GUSTS IN EXCESS OF 60 MPH... HAIL AN INCH IN
DIAMETER OR LARGER... VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL
LIKELY. IF YOU ARE IN THE PATH OF THIS SEVERE STORM MOVE TO SAFE
SHELTER NOW.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
WEDNESDAY EVENING FOR SOUTHEAST NEW MEXICO AND SOUTHWESTERN TEXAS.

&&

LAT...LON 3133 10298 3123 10272 3100 10273 3087 10287
      3072 10302 3068 10344 3087 10371 3108 10359
TIME...MOT...LOC 2154Z 245DEG 24KT 3101 10320

$$
1 follow-up statement
274 
WWUS54 KMAF 112233
SVSMAF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
533 PM CDT WED APR 11 2012

TXC371-389-475-112300-
/O.CON.KMAF.SV.W.0064.000000T0000Z-120411T2300Z/
PECOS TX-WARD TX-REEVES TX-
533 PM CDT WED APR 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHEASTERN REEVES...EXTREME SOUTHEASTERN WARD AND WESTERN PECOS
COUNTIES...

AT 520 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 11 MILES SOUTH OF COYANOSA...OR ABOUT 15 MILES NORTHWEST OF
FORT STOCKTON...MOVING NORTHEAST AT 20 MPH. AN ADDITIONAL SEVERE 
THUNDERSTORM WAS 30 MILES SOUTHWEST OF FORT STOCKTON...AND ALSO 
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND WINDS GREATER THAN 60
MPH. THIS STORM IS MOVING NORTHEAST AT 20 MPH.

SOME LOCATIONS AFFECTED BY THE SEVERE THUNDERSTORM INCLUDE...NORTH
CENTRAL PECOS COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS DETECTED WEAK ROTATION WITHIN THIS STORM. WHILE NOT
IMMEDIATELY LIKELY... A TORNADO MAY STILL DEVELOP. IF A TORNADO IS
SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE... SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
WEDNESDAY EVENING FOR SOUTHEAST NEW MEXICO AND SOUTHWESTERN TEXAS.

&&

LAT...LON 3133 10298 3123 10272 3100 10273 3087 10287
      3072 10302 3068 10344 3087 10371 3108 10359
TIME...MOT...LOC 2225Z 245DEG 24KT 3110 10298

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 2:38 PM CDTSevere Thunderstorm WarningMAFJeff Davis, Reeves52 min
Apr 11, 2:41 PM CDTFire Weather WatchMAF13 hr
Apr 11, 3:07 PM CDTSevere Thunderstorm WarningMAFReeves53 min
Apr 11, 3:58 PM CDTSevere Thunderstorm WarningMAFPecos, Reeves62 min
Apr 11, 4:50 PM CDTSevere Thunderstorm WarningMAFCulberson, Reeves55 min
Apr 11, 5:09 PM CDTSevere Thunderstorm WarningMAFCulberson66 min
Apr 11, 5:56 PM CDTTornado WarningMAFPecos34 min
Apr 11, 6:01 PM CDTSevere Thunderstorm WarningMAFCrane, Pecos, Reeves, Ward59 min
Apr 11, 6:25 PM CDTTornado WarningMAFPecos35 min

Nearby

Severe Thunderstorm Warnings in Texas, 2012Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.