Alert archive / Texas / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 258

May 8, 20077 counties in Oklahoma; 34 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 8, 2007, 3:41 PM CDT for 7 counties in Oklahoma; 34 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 8, 2007, 3:41 PM CDT (20:41 UTC)
Expired
May 8, 2007, 10:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 41 counties

Comanche County, OK, Cotton County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Eastland County, TX, Foard County, TX, Hardeman County, TX, Haskell County, TX, Jack County, TX, Jones County, TX, Kimble County, TX, Knox County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Shackelford County, TX, Stephens County, TX, Sutton County, TX, Taylor County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 62 km from the middle of the area, began a volume at 20:42 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 8, 4:34 PM CDTTornado WarningSJTShackelford, Throckmorton41 min
May 8, 5:12 PM CDTTornado WarningSJTThrockmorton63 min
May 8, 5:16 PM CDTSevere Thunderstorm WarningSJTJones, Taylor59 min
May 8, 5:21 PM CDTSevere Thunderstorm WarningSJTHaskell69 min
May 8, 5:28 PM CDTSevere Thunderstorm WarningOUNTillman32 min
May 8, 5:28 PM CDTFlash Flood WarningSJTHaskell, Jones, Shackelford4 hr
May 8, 5:28 PM CDTFlash Flood WarningSJTTaylor4 hr
May 8, 5:33 PM CDTTornado WarningSJTHaskell42 min
May 8, 5:37 PM CDTSevere Thunderstorm WarningOUNKnox38 min
May 8, 5:47 PM CDTFlash Flood WarningSJTHaskell3 hr
May 8, 5:56 PM CDTTornado WarningSJTThrockmorton64 min
May 8, 6:01 PM CDTSevere Thunderstorm WarningOUNKiowa44 min
May 8, 6:07 PM CDTSevere Thunderstorm WarningOUNBaylor38 min
May 8, 6:08 PM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford37 min
May 8, 6:12 PM CDTSevere Thunderstorm WarningFWDYoung63 min
May 8, 6:19 PM CDTSevere Thunderstorm WarningSJTCoke, Runnels56 min
May 8, 6:23 PM CDTTornado WarningOUNBaylor37 min
May 8, 6:53 PM CDTSevere Thunderstorm WarningOUNComanche52 min
May 8, 6:56 PM CDTFlash Flood WarningOUNKiowa3 hr
May 8, 7:10 PM CDTSevere Thunderstorm WarningFWDYoung35 min
May 8, 7:16 PM CDTTornado WarningOUNComanche29 min
May 8, 7:19 PM CDTSevere Thunderstorm WarningOUNArcher, Clay41 min
May 8, 7:28 PM CDTSevere Thunderstorm WarningOUNTillman32 min
May 8, 7:34 PM CDTFlash Flood WarningOUNComanche3 hr
May 8, 7:36 PM CDTSevere Thunderstorm WarningOUNKiowa39 min
May 8, 7:39 PM CDTTornado WarningOUNComanche36 min
May 8, 8:16 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche44 min
May 8, 9:00 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche32 min
May 8, 9:06 PM CDTSevere Thunderstorm WarningSJTColeman39 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, 8.7 hours before the alert went out and 180 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 2007-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 770 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 2007-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939Sfc1 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
770 J/kg
Mixed-layer CIN
-117 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 7:15 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Johnston, Love and 1 more60 min
May 7, 7:32 PM CDTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 12 more7 hr
May 7, 9:45 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 12 more60 min
May 8, 2:46 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Coal, Jefferson, Johnston and 4 more2 hr
May 8, 5:09 PM CDTMesoscale DiscussionSPCComanche, Cotton, Jackson, Jefferson, Kiowa, Stephens and 1 more96 min
May 8, 5:29 PM CDTTornado WatchSPCCaddo, Comanche, Cotton, Grady, Jackson, Jefferson and 3 more5 hr
May 7, 8:37 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Briscoe, Childress, Coke, Cottle and 38 more7 hr
May 7, 9:23 PM CDTMesoscale DiscussionSPCBandera, Dimmit, Edwards, Frio, Kerr, Kinney and 8 more67 min
May 7, 11:15 PM CDTMesoscale DiscussionSPCAndrews, Borden, Cochran, Crosby, Dawson, Dickens and 12 more60 min
May 7, 11:43 PM CDTMesoscale DiscussionSPCAndrews, Borden, Cochran, Crosby, Dawson, Dickens and 17 more62 min
May 8, 11:19 AM CDTMesoscale DiscussionSPCBorden, Callahan, Coke, Crane, Ector, Fisher and 20 more116 min
May 8, 12:01 PM CDTTornado WatchSPCAndrews, Borden, Brewster, Coke, Crane, Crockett and 27 more7 hr
May 8, 2:44 PM CDTMesoscale DiscussionSPCCoke, Crockett, Fisher, Glasscock, Irion, Mitchell and 6 more91 min
May 8, 6:13 PM CDTMesoscale DiscussionSPCBandera, Edwards, Kerr, Kinney, Medina, Real and 2 more62 min
May 8, 6:58 PM CDTSevere Thunderstorm WatchSPCBandera, Dimmit, Edwards, Gillespie, Kendall, Kerr and 8 more4 hr

Nearby

Severe Thunderstorm Watches in Texas, 2007Severe Thunderstorm Watches in Oklahoma, 2007Every severe thunderstorm watch in 2007

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.