Alert archive / Texas / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 476

June 4, 200329 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 4, 2003, 12:35 AM CDT for 29 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 4, 2003, 12:35 AM CDT (05:35 UTC)
Expired
Jun 4, 2003, 6:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 29 counties

Atascosa County, TX, Austin County, TX, Bastrop County, TX, Bexar County, TX, Brazos County, TX, Burleson County, TX, Caldwell County, TX, Colorado County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Hays County, TX, Jackson County, TX, Karnes County, TX, Lavaca County, TX, Lee County, TX, Milam County, TX, Travis County, TX, Victoria County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 39 km from the middle of the area, began a volume at 05:35 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

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

IssuedProductOfficeCountiesLasted
Jun 4, 1:01 AM CDTSevere Thunderstorm WarningEWXBexar, Comal59 min
Jun 4, 1:12 AM CDTSevere Thunderstorm WarningHGXWalker48 min
Jun 4, 1:47 AM CDTSevere Thunderstorm WarningEWXTravis28 min
Jun 4, 2:03 AM CDTSevere Thunderstorm WarningHGXGrimes42 min
Jun 4, 3:42 AM CDTSevere Thunderstorm WarningHGXBrazos33 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

Corpus Christi, TX (KCRP), launched 00:00Z, 5.6 hours before the alert went out and 207 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, Corpus Christi, TX at 00:00Z on 2003-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3023 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, Corpus Christi, TX at 00:00Z on 2003-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.19395878Sfc1 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
3023 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1042 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 3, 7:50 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Borden, Briscoe, Callahan, Castro and 57 more55 min
Jun 3, 8:30 PM CDTSevere Thunderstorm WatchSPCBandera, Blanco, Bosque, Brown, Burnet, Callahan and 38 more6 hr
Jun 3, 9:05 PM CDTSevere Thunderstorm WatchSPCBailey, Briscoe, Castro, Childress, Cochran, Cottle and 18 more3 hr
Jun 3, 11:37 PM CDTMesoscale DiscussionSPCBandera, Bell, Blanco, Bosque, Brown, Burnet and 35 more113 min
Jun 4, 1:34 AM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 23 more116 min
Jun 4, 2:52 AM CDTMesoscale DiscussionSPCAustin, Bastrop, Brazos, Burleson, Colorado, DeWitt and 12 more83 min
Jun 4, 12:12 PM CDTMesoscale DiscussionSPCBailey, Cochran, Dallam, Deaf Smith, Hartley, Oldham and 2 more2 hr
Jun 4, 3:20 PM CDTTornado WatchSPCBailey, Castro, Cochran, Dallam, Deaf Smith, Hartley and 8 more6 hr
Jun 4, 3:27 PM CDTMesoscale DiscussionSPCDallam, Deaf Smith, Hartley, Oldham93 min
Jun 4, 6:31 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Castro, Cochran, Cottle and 25 more89 min

Nearby

Severe Thunderstorm Watches in Texas, 2003Every severe thunderstorm watch in 2003

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.