Alert archive / Texas / Severe Thunderstorm Watches in 2012

Severe Thunderstorm Watch 301

May 26, 20128 counties in New Mexico; 30 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 26, 2012, 2:24 PM MDT for 8 counties in New Mexico; 30 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 26, 2012, 2:24 PM MDT (20:24 UTC)
Expired
May 26, 2012, 9:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
65 kt
All 38 counties

Chaves County, NM, Curry County, NM, De Baca County, NM, Eddy County, NM, Guadalupe County, NM, Lea County, NM, Quay County, NM, Roosevelt County, NM, Andrews County, TX, Bailey County, TX, Brewster County, TX, Castro County, TX, Cochran County, TX, Crane County, TX, Culberson County, TX, Dawson County, TX, Ector County, TX, Gaines County, TX, Hale County, TX, Hockley County, TX, Jeff Davis County, TX, Lamb County, TX, Loving County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Parmer County, TX, Pecos County, TX, Presidio County, TX, Reeves County, TX, Swisher County, TX, Terrell County, TX, Terry County, TX, Upton County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Midland/Odessa radar (KMAF), 145 km from the middle of the area, began a volume at 20:25 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 26, 4:28 PM MDTSevere Thunderstorm WarningMAFReeves, Ward62 min
May 26, 5:14 PM MDTSevere Thunderstorm WarningMAFReeves, Ward, Winkler61 min
May 26, 6:08 PM MDTSevere Thunderstorm WarningMAFBrewster22 min
May 26, 8:42 PM MDTSevere Thunderstorm WarningLUBCochran, Yoakum28 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 8.4 hours before the alert went out and 144 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 2012-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 675 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 2012-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -69 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
675 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
1387 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-69 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 26, 1:46 PM MDTMesoscale DiscussionSPCChaves, Curry, De Baca, Eddy, Harding, Lea and 3 more119 min
May 25, 7:43 PM MDTMesoscale DiscussionSPCCollingsworth, Donley, Gray, Hemphill, Lipscomb, Wheeler62 min

Nearby

Severe Thunderstorm Watches in Texas, 2012Severe Thunderstorm Watches in New Mexico, 2012Every severe thunderstorm watch 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.