Alert archive / Texas / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 115

April 7, 200328 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 7, 2003, 4:35 PM CDT for 28 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 7, 2003, 4:35 PM CDT (21:35 UTC)
Expired
Apr 7, 2003, 10:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 28 counties

Atascosa County, TX, Bandera County, TX, Bee County, TX, Bexar County, TX, Blanco County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Dimmit County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, La Salle County, TX, Live Oak County, TX, Maverick County, TX, McMullen County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Wilson County, TX, Zavala County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 7, 5:32 PM CDTSevere Thunderstorm WarningEWXEdwards, Real58 min
Apr 7, 5:59 PM CDTSevere Thunderstorm WarningEWXKerr61 min
Apr 7, 6:30 PM CDTFlash Flood WarningEWXKerr, Real3 hr
Apr 7, 8:38 PM CDTSevere Thunderstorm WarningEWXEdwards, Kinney52 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

Del Rio, TX (KDRT), launched 12:00Z, 9.6 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, Del Rio, TX at 12:00Z on 2003-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 973 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, Del Rio, TX at 12:00Z on 2003-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.1939587897Sfc1 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
973 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1167 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 7, 9:42 AM CDTMesoscale DiscussionSPCChambers, Galveston, Jefferson, Orange3 hr
Apr 7, 10:05 AM CDTSevere Thunderstorm WatchSPCChambers, Galveston, Hardin, Jefferson, Liberty, Orange6 hr
Apr 7, 12:24 PM CDTMesoscale DiscussionSPCAtascosa, Austin, Bastrop, Bee, Bexar, Brazoria and 28 more66 min
Apr 7, 1:00 PM CDTSevere Thunderstorm WatchSPCAtascosa, Austin, Bee, Bexar, Brazoria, Caldwell and 23 more5 hr
Apr 7, 2:13 PM CDTMesoscale DiscussionSPCChambers, Hardin, Jefferson, Orange3 hr
Apr 7, 2:36 PM CDTMesoscale DiscussionSPCChambers, Hardin, Jefferson, Orange114 min
Apr 7, 3:36 PM CDTMesoscale DiscussionSPCEdwards, Kinney, Maverick, Real, Uvalde, Val Verde114 min
Apr 7, 3:40 PM CDTSevere Thunderstorm WatchSPCChambers, Galveston, Jefferson, Liberty, Orange5 hr
Apr 7, 5:58 PM CDTMesoscale DiscussionSPCChambers, Galveston, Jefferson2 hr

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.