Alert archive / Texas / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 256

May 22, 2017Eddy County, Lea County, New Mexico; 46 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 22, 2017, 6:26 PM MDT for Eddy County, Lea County, New Mexico; 46 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 22, 2017, 6:26 PM MDT (00:26 UTC)
Expired
May 23, 2017, 12:00 AM MDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
55 kt
All 48 counties

Eddy County, NM, Lea County, NM, Andrews County, TX, Borden County, TX, Callahan County, TX, Cochran County, TX, Coke County, TX, Crane County, TX, Crockett County, TX, Crosby County, TX, Culberson County, TX, Dawson County, TX, Dickens County, TX, Ector County, TX, Fisher County, TX, Gaines County, TX, Garza County, TX, Glasscock County, TX, Haskell County, TX, Hockley County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Kent County, TX, King County, TX, Loving County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Pecos County, TX, Reagan County, TX, Reeves County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Terry County, TX, Throckmorton County, TX, Tom Green County, TX, Upton County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Midland/Odessa radar (KMAF), 73 km from the middle of the area, began a volume at 00:28 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
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 22, 6:45 PM MDTSevere Thunderstorm WarningMAFEddy, Lea45 min
May 22, 6:48 PM MDTSevere Thunderstorm WarningSJTCallahan, Jones, Shackelford, Taylor42 min
May 22, 7:00 PM MDTSevere Thunderstorm WarningMAFEddy, Lea30 min
May 22, 7:21 PM MDTSevere Thunderstorm WarningSJTCallahan, Jones, Shackelford, Taylor39 min
May 22, 7:50 PM MDTSevere Thunderstorm WarningSJTCallahan, Coleman, Taylor40 min
May 22, 8:05 PM MDTSevere Thunderstorm WarningMAFAndrews, Crane, Ector, Midland, Upton, Ward and 1 more55 min
May 22, 8:36 PM MDTSevere Thunderstorm WarningMAFGlasscock, Howard, Martin, Midland39 min
May 22, 8:58 PM MDTSevere Thunderstorm WarningMAFCrane, Midland, Pecos, Reagan, Upton47 min
May 22, 9:13 PM MDTSevere Thunderstorm WarningMAFGlasscock, Howard, Midland, Reagan47 min
May 22, 9:36 PM MDTSevere Thunderstorm WarningSJTCoke, Irion, Sterling, Tom Green39 min
May 22, 9:46 PM MDTSevere Thunderstorm WarningMAFReagan, Upton44 min
May 22, 10:08 PM MDTSevere Thunderstorm WarningSJTIrion, Sterling, Tom Green52 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 00:00Z, 0.4 hours before the alert went out and 72 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 2017-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 998 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 2017-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939587897117Sfc1 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
998 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
1281 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 7:50 PM MDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Foard, Hardeman and 10 more2 hr
May 23, 1:34 PM MDTMesoscale DiscussionSPCBandera, Bastrop, Bell, Bexar, Blanco, Brazos and 27 more116 min
May 23, 2:33 PM MDTSevere Thunderstorm WatchSPCAnderson, Angelina, Atascosa, Austin, Bastrop, Bell and 51 more7 hr
May 23, 5:54 PM MDTSevere Thunderstorm WatchSPCAransas, Bee, Calhoun, Duval, Goliad, Jim Wells and 9 more3 hr
May 23, 5:58 PM MDTMesoscale DiscussionSPCAransas, Austin, Bee, Calhoun, Colorado, DeWitt and 17 more2 hr

Nearby

Severe Thunderstorm Watches in Texas, 2017Severe Thunderstorm Watches in New Mexico, 2017Every severe thunderstorm watch in 2017

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.