Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 79, NWS Midland/Odessa, TX

April 15, 20125 counties in Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Apr 15, 2012, 12:24 AM CDT for 5 counties in Texas. It was in force for 51 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 15, 2012, 12:24 AM CDT (05:24 UTC)
Expired
Apr 15, 2012, 1:15 AM CDT
In force
51 min
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon

Counties Borden County, TX, Dawson County, TX, Howard County, TX, Martin County, TX, Scurry County, TX

The radar

The Midland/Odessa radar (KMAF), 94 km from the middle of the area, began a volume at 05:27 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

TimeReportWhereRemark
Apr 15, 12:31 AM CDTHAIL 0.881 E Gail, TXPEA TO NICKEL HAIL.

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.

IssuedProductOfficeLasted
Apr 14, 10:29 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 5.4 hours before the alert went out and 94 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 00:00Z on 2012-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 815 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 square meters per square second.1939587897Sfc1 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
815 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
2403 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.2

Open this sounding in Storm Lab

The text

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

521 
WUUS54 KMAF 150524
SVRMAF
TXC033-115-227-317-415-150615-
/O.NEW.KMAF.SV.W.0079.120415T0524Z-120415T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
1224 AM CDT SUN APR 15 2012

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN DAWSON COUNTY IN WEST TEXAS...
  NORTHWESTERN HOWARD COUNTY IN WEST TEXAS...
  NORTHEASTERN MARTIN COUNTY IN WEST TEXAS...
  EXTREME NORTHWESTERN SCURRY COUNTY IN WEST TEXAS...
  BORDEN COUNTY IN WEST TEXAS...

* UNTIL 115 AM CDT

* AT 1218 AM 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 8 MILES
  NORTH OF VEALMOOR...OR 12 MILES SOUTHWEST OF GAIL...MOVING         
  NORTHEAST AT 45 MPH. A SMALL CLUSTER OF SEVERE STORMS WERE ALSO    
  LOCATED FROM TARZAN TO PATRICIA...MOVING NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORMS WILL AFFECT THE FOLLOWING LOCATIONS...
  GAIL...
  PATRICIA...
  TARZAN...
  ACKERLY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH... PREPARE
IMMEDIATELY FOR DAMAGING WINDS... DESTRUCTIVE HAIL... AND DEADLY
CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT SUNDAY
MORNING FOR WEST TEXAS.

&&

LAT...LON 3266 10188 3272 10161 3295 10151 3295 10116
      3255 10119 3243 10135 3228 10201 3260 10205
TIME...MOT...LOC 0522Z 231DEG 44KT 3265 10150

$$
1 follow-up statement
620 
WWUS54 KMAF 150551
SVSMAF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
1251 AM CDT SUN APR 15 2012

TXC033-115-227-317-415-150615-
/O.CON.KMAF.SV.W.0079.000000T0000Z-120415T0615Z/
DAWSON TX-HOWARD TX-MARTIN TX-SCURRY TX-BORDEN TX-
1251 AM CDT SUN APR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR BORDEN...EXTREME NORTHWESTERN SCURRY...NORTHEASTERN MARTIN...
NORTHWESTERN HOWARD AND SOUTHEASTERN DAWSON COUNTIES...

AT 1246 AM 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 14 MILES EAST OF GAIL...MOVING NORTHEAST AT 45 MPH. A SECOND 
SEVERE STORM IS NEAR ACKERLY.

SOME LOCATIONS AFFECTED BY THE SEVERE THUNDERSTORM INCLUDE...GAIL IN 
BORDEN COUNTY AND NEAR FLUVANNA IN EXTREME NORTHWESTERN SCURRY 
COUNTY...AND ACKERLY IN NORTHEAST MARTIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE THE PATH... PREPARE 
IMMEDIATELY FOR DAMAGING WINDS... DESTRUCTIVE HAIL... AND DEADLY 
CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO 
SHELTER...PREFERABLY INSIDE A STRONG BUILDING AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT SUNDAY
MORNING FOR WEST TEXAS.

&&

LAT...LON 3234 10185 3252 10182 3259 10179 3272 10161
      3295 10151 3295 10116 3255 10119 3243 10135
TIME...MOT...LOC 0548Z 231DEG 44KT 3285 10121

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 10:16 PM CDTSevere Thunderstorm WarningMAFDawson, Gaines59 min
Apr 14, 11:13 PM CDTSevere Thunderstorm WarningMAFBorden, Dawson62 min
Apr 15, 12:32 AM CDTSevere Thunderstorm WarningMAFGlasscock, Howard, Martin, Midland58 min
Apr 15, 1:00 AM CDTSevere Thunderstorm WarningMAFGlasscock, Midland, Reagan, Upton60 min
Apr 15, 1:18 AM CDTSevere Thunderstorm WarningMAFGlasscock, Howard57 min
Apr 15, 1:40 AM CDTSevere Thunderstorm WarningMAFGlasscock, Howard, Reagan, Upton65 min
Apr 15, 1:59 AM CDTSevere Thunderstorm WarningMAFMitchell61 min
Apr 15, 5:16 AM CDTRed Flag WarningMAFAndrews, Crane, Ector, Gaines, Loving, Midland and 4 more14 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.