Alert archive / Texas / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 45

April 5, 200419 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 5, 2004, 10:35 PM CDT for 19 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 5, 2004, 10:35 PM CDT (03:35 UTC)
Expired
Apr 6, 2004, 5:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Bandera County, TX, Bexar County, TX, Blanco County, TX, Comal County, TX, Frio County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Llano County, TX, Mason County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Williamson County, TX, Zavala County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 5, 11:19 PM CDTSevere Thunderstorm WarningEWXEdwards, Kerr, Real56 min
Apr 6, 12:14 AM CDTSevere Thunderstorm WarningEWXKerr31 min
Apr 6, 12:35 AM CDTSevere Thunderstorm WarningEWXKerr10 min
Apr 6, 1:12 AM CDTSevere Thunderstorm WarningEWXGillespie, Kerr63 min
Apr 6, 1:38 AM CDTFlash Flood WarningEWXEdwards, Kerr, Kinney, Real, Val Verde4 hr
Apr 6, 2:16 AM CDTSevere Thunderstorm WarningEWXGillespie59 min
Apr 6, 2:35 AM CDTFlash Flood WarningEWXMaverick3 hr
Apr 6, 2:48 AM CDTSevere Thunderstorm WarningEWXBlanco57 min
Apr 6, 3:04 AM CDTFlash Flood WarningEWXUvalde3 hr
Apr 6, 3:26 AM CDTSevere Thunderstorm WarningEWXHays, Travis64 min
Apr 6, 3:53 AM CDTFlash Flood WarningEWXGillespie3 hr
Apr 6, 4:08 AM CDTSevere Thunderstorm WarningEWXWilliamson67 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 00:00Z, 3.6 hours before the alert went out and 105 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 00:00Z on 2004-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 590 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 00:00Z on 2004-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 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
590 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
656 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 5, 11:55 PM CDTMesoscale DiscussionSPCBandera, Blanco, Gillespie, Kendall, Kerr, Llano and 5 more2 hr
Apr 6, 2:42 AM CDTMesoscale DiscussionSPCBandera, Bexar, Blanco, Burnet, Comal, Dimmit and 12 more63 min
Apr 6, 7:39 AM CDTMesoscale DiscussionSPCAtascosa, Austin, Bee, Brazoria, Colorado, DeWitt and 14 more66 min
Apr 6, 7:55 AM CDTTornado WatchSPCAransas, Austin, Bee, Brazoria, Brazos, Burleson and 20 more5 hr
Apr 6, 9:29 AM CDTMesoscale DiscussionSPCAransas, Austin, Bee, Brazoria, Brazos, Burleson and 20 more91 min
Apr 6, 10:27 AM CDTMesoscale DiscussionSPCAustin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 3 more63 min
Apr 6, 11:05 AM CDTTornado WatchSPCAransas, Austin, Bee, Brazoria, Calhoun, Chambers and 20 more5 hr
Apr 6, 12:52 PM CDTMesoscale DiscussionSPCAransas, Austin, Bee, Brazoria, Calhoun, Chambers and 22 more83 min
Apr 6, 2:19 PM CDTMesoscale DiscussionSPCArcher, Baylor, Childress, Clay, Cottle, Crosby and 22 more116 min
Apr 6, 2:43 PM CDTMesoscale DiscussionSPCAransas, Bee, Calhoun, DeWitt, Galveston, Goliad and 9 more62 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.