Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 83, NWS Midland/Odessa, TX

April 15, 20124 counties in Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Apr 15, 2012, 1:40 AM CDT for 4 counties in Texas. It was in force for 65 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, 1:40 AM CDT (06:40 UTC)
Expired
Apr 15, 2012, 2:45 AM CDT
In force
65 min
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon

Counties Glasscock County, TX, Howard County, TX, Reagan County, TX, Upton County, TX

The radar

The Midland/Odessa radar (KMAF), 76 km from the middle of the area, began a volume at 06:44 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, 2:10 AM CDTTSTM WND GST 60Garden City, TXNICKEL HAIL ALSO OCCURRED.

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, 6.7 hours before the alert went out and 77 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°0°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.

405 
WUUS54 KMAF 150640
SVRMAF
TXC173-227-383-461-150745-
/O.NEW.KMAF.SV.W.0083.120415T0640Z-120415T0745Z/

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

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GLASSCOCK COUNTY IN WEST TEXAS...
  SOUTHEASTERN HOWARD COUNTY IN WEST TEXAS...
  REAGAN COUNTY IN WEST TEXAS...
  SOUTHEASTERN UPTON COUNTY IN WEST TEXAS...

* UNTIL 245 AM CDT

* AT 139 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR
  GARDEN CITY...MOVING NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT THE FOLLOWING LOCATIONS...
  GARDEN CITY...
  RANKIN...

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 600 AM CDT SUNDAY
MORNING FOR WEST TEXAS.

&&

LAT...LON 3208 10120 3208 10126 3138 10126 3108 10129
      3110 10205 3168 10173 3216 10153 3217 10119
TIME...MOT...LOC 0640Z 230DEG 47KT 3185 10152

$$
1 follow-up statement
636 
WWUS54 KMAF 150725
SVSMAF

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

TXC227-150735-
/O.CAN.KMAF.SV.W.0083.000000T0000Z-120415T0745Z/
HOWARD TX-
225 AM CDT SUN APR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HOWARD COUNTY IS
CANCELLED...

AT 225 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAD WEAKENED.
THEREFORE THE SEVERE THUNDERSTORM WARNING IS CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3110 10189 3158 10155 3208 10127 3208 10120
      3208 10126 3138 10126 3108 10129
TIME...MOT...LOC 0725Z 235DEG 74KT 3133 10152

$$

TXC173-383-461-150745-
/O.CON.KMAF.SV.W.0083.000000T0000Z-120415T0745Z/
GLASSCOCK TX-REAGAN TX-UPTON TX-
225 AM CDT SUN APR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CDT
FOR SOUTHEASTERN UPTON...REAGAN AND EASTERN GLASSCOCK COUNTIES...

AT 220 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 NEAR BEST...OR ABOUT 11 MILES NORTHWEST OF BIG LAKE...MOVING
NORTHEAST AT 85 MPH.

SOME LOCATIONS AFFECTED BY THE SEVERE THUNDERSTORM INCLUDE...CENTRAL
REAGAN COUNTY...EAST CENTRAL REAGAN COUNTY AND EXTREME EAST CENTRAL
REAGAN COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS 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 3110 10189 3158 10155 3208 10127 3208 10120
      3208 10126 3138 10126 3108 10129
TIME...MOT...LOC 0725Z 235DEG 74KT 3133 10152

$$

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, 12:24 AM CDTSevere Thunderstorm WarningMAFBorden, Dawson, Howard, Martin, Scurry51 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, 1:59 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.