Alert archive / Texas / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 325

June 1, 200718 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 1, 2007, 5:48 PM CDT for 18 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 1, 2007, 5:48 PM CDT (22:48 UTC)
Expired
Jun 2, 2007, 12:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt

Counties Callahan County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Haskell County, TX, Hood County, TX, Jack County, TX, Jones County, TX, Montague County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Shackelford County, TX, Stephens County, TX, Taylor County, TX, Throckmorton County, TX, Wise County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 73 km from the middle of the area, began a volume at 22:50 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
40%
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
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 1, 5:59 PM CDTSevere Thunderstorm WarningSJTHaskell, Throckmorton61 min
Jun 1, 6:21 PM CDTTornado WarningSJTThrockmorton24 min
Jun 1, 6:53 PM CDTFlash Flood WarningSJTHaskell, Throckmorton3 hr
Jun 1, 6:58 PM CDTSevere Thunderstorm WarningSJTThrockmorton47 min
Jun 1, 7:00 PM CDTSevere Thunderstorm WarningSJTHaskell30 min
Jun 1, 7:13 PM CDTSevere Thunderstorm WarningFWDYoung62 min
Jun 1, 7:44 PM CDTSevere Thunderstorm WarningSJTShackelford, Throckmorton46 min
Jun 1, 7:51 PM CDTSevere Thunderstorm WarningFWDMontague54 min
Jun 1, 7:55 PM CDTSevere Thunderstorm WarningSJTHaskell, Jones, Shackelford50 min
Jun 1, 8:08 PM CDTSevere Thunderstorm WarningFWDStephens67 min
Jun 1, 8:10 PM CDTSevere Thunderstorm WarningFWDYoung65 min
Jun 1, 8:27 PM CDTSevere Thunderstorm WarningSJTShackelford48 min
Jun 1, 8:35 PM CDTSevere Thunderstorm WarningSJTJones, Shackelford25 min
Jun 1, 8:59 PM CDTFlash Flood WarningSJTJones, Shackelford3 hr
Jun 1, 9:00 PM CDTSevere Thunderstorm WarningSJTCallahan, Jones, Shackelford45 min
Jun 1, 9:10 PM CDTSevere Thunderstorm WarningFWDStephens65 min
Jun 1, 9:10 PM CDTSevere Thunderstorm WarningSJTShackelford19 min
Jun 1, 9:25 PM CDTSevere Thunderstorm WarningFWDEastland65 min
Jun 1, 9:31 PM CDTSevere Thunderstorm WarningFWDPalo Pinto59 min
Jun 1, 9:43 PM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford27 min
Jun 1, 10:29 PM CDTSevere Thunderstorm WarningFWDEastland46 min
Jun 1, 11:17 PM CDTSevere Thunderstorm WarningFWDParker58 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, 10.8 hours before the alert went out and 136 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 2007-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1570 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 2007-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
1570 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
918 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 31, 7:52 PM CDTMesoscale DiscussionSPCBriscoe, Childress, Cochran, Cottle, Crosby, Dickens and 15 more83 min
May 31, 9:07 PM CDTMesoscale DiscussionSPCHansford, Hemphill, Lipscomb, Ochiltree, Roberts, Wheeler53 min
May 31, 9:38 PM CDTSevere Thunderstorm WatchSPCCarson, Collingsworth, Donley, Gray, Hansford, Hemphill and 5 more7 hr
May 31, 10:39 PM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Childress, Clay, Cottle, Crosby and 13 more6 hr
Jun 1, 2:24 AM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cottle, Crosby, Dickens and 22 more66 min
Jun 1, 3:18 AM CDTMesoscale DiscussionSPCHardeman87 min
Jun 1, 7:58 AM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 23 more62 min
Jun 1, 1:45 PM CDTMesoscale DiscussionSPCArcher, Armstrong, Bailey, Baylor, Briscoe, Castro and 31 more60 min
Jun 1, 2:03 PM CDTTornado WatchSPCArcher, Bailey, Baylor, Briscoe, Castro, Childress and 20 more7 hr
Jun 1, 5:30 PM CDTMesoscale DiscussionSPCArcher, Bailey, Baylor, Borden, Briscoe, Castro and 36 more60 min

Nearby

Severe Thunderstorm Watches in Texas, 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.