Alert archive / Texas / Severe Thunderstorm Watches in 2008

Severe Thunderstorm Watch 124

March 17, 200815 counties in Oklahoma; 34 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Mar 17, 2008, 1:30 PM CDT for 15 counties in Oklahoma; 34 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 17, 2008, 1:30 PM CDT (18:30 UTC)
Expired
Mar 17, 2008, 7:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 49 counties

Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Grady County, OK, Jackson County, OK, Jefferson County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Foard County, TX, Hardeman County, TX, Haskell County, TX, Irion County, TX, Jack County, TX, Jones County, TX, Knox County, TX, McCulloch County, TX, Mills County, TX, Montague County, TX, Nolan County, TX, Palo Pinto County, TX, Runnels County, TX, San Saba County, TX, Shackelford County, TX, Stephens County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX

The radar

The Altus AFB radar (KFDR), 44 km from the middle of the area, began a volume at 18:31 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
30%
One or more gusts of 65 knots or more
30%
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
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 17, 1:39 PM CDTSevere Thunderstorm WarningOUNKiowa, Washita51 min
Mar 17, 1:55 PM CDTSevere Thunderstorm WarningOUNGreer, Jackson, Kiowa50 min
Mar 17, 2:18 PM CDTTornado WarningSJTNolan27 min
Mar 17, 2:40 PM CDTSevere Thunderstorm WarningOUNKiowa, Washita50 min
Mar 17, 3:24 PM CDTSevere Thunderstorm WarningOUNCaddo51 min
Mar 17, 4:04 PM CDTSevere Thunderstorm WarningOUNCaddo, Canadian41 min
Mar 17, 5:53 PM CDTSevere Thunderstorm WarningSJTCallahan, Coleman, Runnels, Taylor52 min
Mar 17, 6:08 PM CDTSevere Thunderstorm WarningSJTThrockmorton52 min
Mar 17, 6:34 PM CDTSevere Thunderstorm WarningOUNBaylor41 min
Mar 17, 6:41 PM CDTSevere Thunderstorm WarningSJTJones, Taylor49 min
Mar 17, 6:42 PM CDTSevere Thunderstorm WarningSJTColeman, Concho, Runnels33 min
Mar 17, 6:54 PM CDTTornado WarningSJTJones, Taylor23 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

Fort Worth, TX (KFWD), launched 12:00Z, 6.5 hours before the alert went out and 208 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, Fort Worth, TX at 12:00Z on 2008-03-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 185 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, Fort Worth, TX at 12:00Z on 2008-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 338 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
185 J/kg
Mixed-layer CIN
-428 J/kg
Mixed-layer LCL
651 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
338 m²/s²
0-3 km storm-relative helicity
576 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
Mar 16, 11:49 PM CDTMesoscale DiscussionSPCHarmon56 min
Mar 17, 2:53 AM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Comanche, Cotton and 17 more2 hr
Mar 17, 3:25 AM CDTSevere Thunderstorm WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 34 more8 hr
Mar 17, 4:01 AM CDTMesoscale DiscussionSPCBeaver, Harper, Texas119 min
Mar 17, 5:41 AM CDTMesoscale DiscussionSPCBlaine, Caddo, Canadian, Carter, Cleveland, Comanche and 23 more94 min
Mar 17, 7:37 AM CDTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 26 more83 min
Mar 17, 10:25 AM CDTMesoscale DiscussionSPCBlaine, Caddo, Canadian, Carter, Cleveland, Comanche and 17 more65 min
Mar 17, 1:02 PM CDTMesoscale DiscussionSPCCaddo, Comanche, Cotton, Jackson, Jefferson, Kiowa and 3 more88 min
Mar 17, 3:53 PM CDTMesoscale DiscussionSPCCanadian, Carter, Cleveland, Comanche, Cotton, Garvin and 11 more97 min
Mar 17, 4:51 PM CDTMesoscale DiscussionSPCCleveland, Creek, Kay, Lincoln, Logan, McClain and 12 more24 min
Mar 17, 5:30 PM CDTMesoscale DiscussionSPCChoctaw, Latimer, McCurtain, Pushmataha30 min
Mar 17, 5:50 PM CDTTornado WatchSPCAtoka, Bryan, Choctaw, Haskell, Latimer, LeFlore and 3 more5 hr
Mar 17, 6:20 PM CDTMesoscale DiscussionSPCBlaine, Caddo, Canadian, Cleveland, Comanche, Cotton and 14 more25 min
Mar 17, 12:04 AM CDTSevere Thunderstorm WatchSPCArmstrong, Bailey, Briscoe, Carson, Castro, Childress and 38 more9 hr
Mar 17, 10:13 AM CDTMesoscale DiscussionSPCBandera, Bell, Bexar, Blanco, Bosque, Brown and 39 more92 min
Mar 17, 6:40 PM CDTTornado WatchSPCBandera, Blanco, Bosque, Brown, Burnet, Callahan and 54 more7 hr

Nearby

Severe Thunderstorm Watches in Texas, 2008Severe Thunderstorm Watches in Oklahoma, 2008Every 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.