Alert archive / Texas / Severe Thunderstorm Watches in 2008

Severe Thunderstorm Watch 355

May 24, 200813 counties in Oklahoma; 14 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 24, 2008, 8:29 PM CDT for 13 counties in Oklahoma; 14 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 24, 2008, 8:29 PM CDT (01:29 UTC)
Expired: May 25, 2008, 2:25 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 27 counties

Beckham County, OK, Caddo County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Dickens County, TX, Foard County, TX, Hardeman County, TX, Kent County, TX, King County, TX, Knox County, TX, Stonewall County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 68 km from the middle of the area, began a volume at 01:31 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: 20%
Ten or more severe hail reports: 40%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 24, 8:41 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	49 min
May 24, 8:58 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman	47 min
May 24, 9:30 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson	45 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.5 hours before the alert went out and 206 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3945 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 8:04 PM CDT	Mesoscale Discussion	SPC	Jackson	116 min
May 24, 9:34 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Craig, Garfield, Grant, Kay, Noble and 5 more	56 min
May 24, 11:00 PM CDT	Mesoscale Discussion	SPC	Comanche, Cotton, Tillman	60 min
May 25, 11:55 AM CDT	Mesoscale Discussion	SPC	Texas	65 min
May 25, 12:17 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Delaware, LeFlore, Mayes and 6 more	58 min
May 25, 12:39 PM CDT	Tornado Watch	SPC	Beaver, Cimarron, Texas	5 hr
May 25, 1:13 PM CDT	Tornado Watch	SPC	Adair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 5 more	7 hr
May 25, 2:49 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Delaware, Haskell, Mayes and 8 more	56 min
May 25, 5:29 PM CDT	Mesoscale Discussion	SPC	Beaver, Ellis, Harper, Roger Mills, Texas, Woodward	61 min
May 25, 5:51 PM CDT	Tornado Watch	SPC	Beaver, Ellis, Harper, Roger Mills, Texas, Woods and 1 more	7 hr
May 25, 6:06 PM CDT	Mesoscale Discussion	SPC	Adair, Delaware, Ottawa, Sequoyah	114 min
May 25, 3:11 PM CDT	Mesoscale Discussion	SPC	Brewster, Cochran, Jeff Davis, Loving, Presidio, Reeves and 3 more	94 min
May 25, 3:32 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Bailey, Brewster, Castro, Cochran, Crane and 22 more	7 hr
May 25, 3:50 PM CDT	Mesoscale Discussion	SPC	Brewster, Cochran, Jeff Davis, Loving, Presidio, Reeves and 3 more	85 min

Nearby

Severe Thunderstorm Watches in Texas, 2008 Severe Thunderstorm Watches in Oklahoma, 2008 Every severe thunderstorm watch in 2008

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.