Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 49, NWS Austin/San Antonio, TX

April 16, 2002Bexar County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 16, 2002, 7:31 PM CDT for Bexar County, Texas. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 16, 2002, 7:31 PM CDT (00:31 UTC)
Expired
Apr 16, 2002, 8:00 PM CDT
In force
29 min
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Bexar County, TX

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 16, 5:00 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 0.5 hours before the alert went out and 219 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 2002-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 626 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, Del Rio, TX at 00:00Z on 2002-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
626 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
2821 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KEWX 170031
SVRSAT
TXC029-170100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
729 PM CDT TUE APR 16 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  BEXAR

* UNTIL 800 PM CDT

* AT 727 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
SHOW THUNDERSTORMS OVER BEXAR COUNTY...MOVING EAST AT 20 
MPH.

DAMAGING WIND AND HAIL IS POSSIBLE WITH THESE THUNDERSTORMS OVER 
PARTS OF BEXAR COUNTY UNTIL 800 PM CDT.  LOCALLY HEAVY RAIN WILL 
ALSO ACCOMPANY THESE THUNDERSTORMS.  

LAT...LON 2943 9874 2930 9859 2948 9829 2967 9856

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 16, 7:00 PM CDTSevere Thunderstorm WarningEWXBexar30 min
Apr 16, 7:04 PM CDTSevere Thunderstorm WarningEWXWilson56 min
Apr 16, 7:16 PM CDTSevere Thunderstorm WarningEWXAtascosa, Karnes59 min
Apr 16, 7:45 PM CDTSevere Thunderstorm WarningEWXComal, Guadalupe45 min
Apr 16, 7:58 PM CDTSevere Thunderstorm WarningEWXBexar22 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning 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.