Alert archive / Texas / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 195

May 4, 200112 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 4, 2001, 8:00 PM CDT for 12 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 4, 2001, 8:00 PM CDT (01:00 UTC)
Expired
May 4, 2001, 11:00 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center

Counties Bell County, TX, Blanco County, TX, Burnet County, TX, Coryell County, TX, Falls County, TX, Hamilton County, TX, Hays County, TX, Kendall County, TX, Lampasas County, TX, McLennan County, TX, Travis County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.0 hours before the alert went out and 255 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 2001-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1422 joules per kilogram.LCLEL10008507005003002001001 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 2001-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 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
1422 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
904 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
332 m²/s²
Significant tornado parameter
2.4
Supercell composite
13.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 4, 7:00 PM CDTTornado WatchSPCBosque, Clay, Collin, Comanche, Cooke, Dallas and 14 more4 hr
May 4, 9:00 PM CDTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bexar, Caldwell, Comal, Dimmit and 7 more2 hr
May 5, 2:30 PM CDTSevere Thunderstorm WatchSPCBell, Blanco, Bosque, Brazos, Brown, Burleson and 28 more6 hr
May 5, 3:15 PM CDTTornado WatchSPCArcher, Baylor, Clay, Foard, Hardeman, King and 3 more6 hr

Nearby

Severe Thunderstorm Watches in Texas, 2001Every severe thunderstorm watch in 2001

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.