Alert archive / Texas / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 43

April 4, 200421 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 4, 2004, 6:40 PM CDT for 21 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Apr 4, 2004, 6:40 PM CDT (23:40 UTC)
Expired
Apr 4, 2004, 11:00 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 21 counties

Aransas County, TX, Atascosa County, TX, Bee County, TX, Brooks County, TX, Duval County, TX, Goliad County, TX, Jackson County, TX, Jim Hogg County, TX, Jim Wells County, TX, Karnes County, TX, Kenedy County, TX, Kleberg County, TX, Live Oak County, TX, McMullen County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Starr County, TX, Victoria County, TX, Webb County, TX, Zapata County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 4, 7:15 PM CDTFlash Flood WarningBROBrooks105 min
Apr 4, 7:24 PM CDTSevere Thunderstorm WarningBROZapata66 min
Apr 4, 7:29 PM CDTSevere Thunderstorm WarningCRPWebb61 min
Apr 4, 7:33 PM CDTSevere Thunderstorm WarningBROBrooks57 min
Apr 4, 7:44 PM CDTFlash Flood WarningBROZapata3 hr
Apr 4, 8:10 PM CDTFlash Flood WarningBROBrooks, Jim Hogg3 hr
Apr 4, 8:14 PM CDTSevere Thunderstorm WarningBROJim Hogg61 min
Apr 4, 8:28 PM CDTSevere Thunderstorm WarningCRPWebb47 min
Apr 4, 8:30 PM CDTSevere Thunderstorm WarningBROBrooks45 min
Apr 4, 8:46 PM CDTFlash Flood WarningCRPDuval, Goliad231 days
Apr 4, 8:49 PM CDTTornado WarningBROJim Hogg41 min
Apr 4, 9:04 PM CDTTornado WarningBROBrooks, Jim Hogg41 min
Apr 4, 9:14 PM CDTSevere Thunderstorm WarningBROBrooks31 min
Apr 4, 9:45 PM CDTSevere Thunderstorm WarningBROBrooks, Kenedy45 min
Apr 4, 10:11 PM CDTFlash Flood WarningCRPBee, Victoria231 days
Apr 4, 10:32 PM CDTSevere Thunderstorm WarningBROKenedy58 min
Apr 4, 10:54 PM CDTFlash Flood WarningCRPKleberg, Victoria231 days

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 12:00Z, 11.7 hours before the alert went out and 128 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 12:00Z on 2004-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1090 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 12:00Z on 2004-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.193958Sfc1 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
1090 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
628 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 4, 4:40 AM CDTMesoscale DiscussionSPCCrane, Crockett, Culberson, Ector, Jeff Davis, Kinney and 8 more3 hr
Apr 4, 11:38 AM CDTMesoscale DiscussionSPCBrooks, Cameron, Dimmit, Duval, Hidalgo, Jim Hogg and 9 more3 hr
Apr 4, 12:41 PM CDTMesoscale DiscussionSPCAtascosa, Bexar, Caldwell, DeWitt, Dimmit, Frio and 7 more3 hr
Apr 4, 1:10 PM CDTSevere Thunderstorm WatchSPCAtascosa, Dimmit, Duval, Frio, Jim Wells, Karnes and 8 more6 hr
Apr 4, 1:23 PM CDTMesoscale DiscussionSPCBrewster, Terrell, Val Verde2 hr
Apr 4, 2:10 PM CDTSevere Thunderstorm WatchSPCBrewster, Presidio, Terrell6 hr
Apr 4, 3:30 PM CDTMesoscale DiscussionSPCAtascosa, Duval, Jim Wells, Karnes, La Salle, Live Oak and 3 more2 hr
Apr 4, 5:32 PM CDTMesoscale DiscussionSPCAtascosa, Austin, Bastrop, Bee, Bexar, Burleson and 19 more118 min

Nearby

Severe Thunderstorm Watches in Texas, 2004Every severe thunderstorm watch in 2004

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.