Alert archive / Texas / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 56

March 30, 200230 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Mar 30, 2002, 5:30 AM CST for 30 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 30, 2002, 5:30 AM CST (11:30 UTC)
Expired
Mar 30, 2002, 11:00 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 30 counties

Atascosa County, TX, Bandera County, TX, Bexar County, TX, Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Edwards County, TX, Fisher County, TX, Frio County, TX, Gillespie County, TX, Jones County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Medina County, TX, Menard County, TX, Nolan County, TX, Real County, TX, Runnels County, TX, San Saba County, TX, Shackelford County, TX, Taylor County, TX, Tom Green County, TX, Uvalde County, TX, Zavala County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 11.5 hours before the alert went out and 270 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 00:00Z on 2002-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3168 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 00:00Z on 2002-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -45 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
3168 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-45 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 29, 7:30 PM CSTSevere Thunderstorm WatchSPCBorden, Coke, Crockett, Fisher, Glasscock, Howard and 7 more6 hr
Mar 29, 11:30 PM CSTSevere Thunderstorm WatchSPCBrown, Callahan, Coke, Coleman, Collin, Comanche and 25 more6 hr
Mar 30, 3:00 AM CSTSevere Thunderstorm WatchSPCAnderson, Bell, Bosque, Bowie, Camp, Collin and 39 more5 hr
Mar 30, 12:30 PM CSTTornado WatchSPCAngelina, Brazos, Burleson, Falls, Grimes, Hardin and 18 more6 hr
Mar 30, 1:00 PM CSTTornado WatchSPCAnderson, Bosque, Camp, Cherokee, Comanche, Dallas and 28 more5 hr
Mar 30, 3:45 PM CSTSevere Thunderstorm WatchSPCAransas, Austin, Brazoria, Calhoun, Colorado, Fort Bend and 8 more5 hr
Mar 30, 5:30 PM CSTTornado WatchSPCAnderson, Angelina, Cherokee, Gregg, Grimes, Hardin and 22 more6 hr

Nearby

Severe Thunderstorm Watches in Texas, 2002Every severe thunderstorm watch in 2002

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.