Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 21, NWS Austin/San Antonio, TX

April 7, 2002Wilson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 7, 2002, 10:15 PM CDT for Wilson County, Texas. It was in force for 60 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 7, 2002, 10:15 PM CDT (03:15 UTC)
Expired: Apr 7, 2002, 11:15 PM CDT
In force: 60 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 56 km from the middle of the area, began a volume at 03:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 7, 8:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 3.3 hours before the alert went out and 179 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2444 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 655 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 080315
SVRSAT
TXC493-080415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1014 PM CDT SUN APR 7 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 1115 PM CDT

* AT 1014 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER FLORESVILLE...MOVING EAST AT 30 MPH.

* ANOTHER SEVERE THUNDERSTORM WAS INDICATED NEAR STOCKDALE...MOVING
  EAST AT 30 MPH.

* THIS WARNING INCLUDES LOCATIONS IN AND AROUND...
  FLORESVILLE
  STOCKDALE
  PANDORA

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.


LAT...LON 2921 9835 2900 9806 2924 9776 2937 9788

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 7:03 PM CDT	Tornado Warning	EWX	Uvalde	57 min
Apr 7, 7:09 PM CDT	Tornado Warning	EWX	Medina	66 min
Apr 7, 7:36 PM CDT	Tornado Warning	EWX	Frio	54 min
Apr 7, 8:14 PM CDT	Tornado Warning	EWX	Medina	31 min
Apr 7, 8:29 PM CDT	Severe Thunderstorm Warning	EWX	Hays	46 min
Apr 7, 8:29 PM CDT	Tornado Warning	EWX	Frio	61 min
Apr 7, 8:36 PM CDT	Severe Thunderstorm Warning	EWX	Comal	24 min
Apr 7, 8:40 PM CDT	Tornado Warning	EWX	Atascosa	65 min
Apr 7, 9:18 PM CDT	Tornado Warning	EWX	Wilson	57 min
Apr 7, 9:31 PM CDT	Severe Thunderstorm Warning	EWX	Frio	59 min
Apr 7, 10:26 PM CDT	Flash Flood Warning	EWX	Frio	3 hr
Apr 7, 10:31 PM CDT	Severe Thunderstorm Warning	EWX	Frio	59 min
Apr 7, 10:37 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde	53 min
Apr 7, 10:55 PM CDT	Severe Thunderstorm Warning	EWX	Gonzales	65 min
Apr 7, 11:07 PM CDT	Flash Flood Warning	EWX	Atascosa	6 hr
Apr 7, 11:25 PM CDT	Flash Flood Warning	EWX	Wilson	6 hr
Apr 7, 11:29 PM CDT	Severe Thunderstorm Warning	EWX	Frio	46 min
Apr 7, 11:37 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa	38 min
Apr 7, 11:59 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	46 min
Apr 8, 12:06 AM CDT	Severe Thunderstorm Warning	EWX	Wilson	54 min
Apr 8, 12:13 AM CDT	Tornado Warning	EWX	Atascosa	62 min
Apr 8, 12:23 AM CDT	Severe Thunderstorm Warning	EWX	Frio	37 min
Apr 8, 12:31 AM CDT	Severe Thunderstorm Warning	EWX	Medina, Uvalde, Zavala	59 min
Apr 8, 12:54 AM CDT	Tornado Warning	EWX	Frio	36 min
Apr 8, 12:55 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kendall	50 min
Apr 8, 1:00 AM CDT	Severe Thunderstorm Warning	EWX	Wilson	45 min
Apr 8, 1:20 AM CDT	Tornado Warning	EWX	Atascosa, Frio, Medina	55 min
Apr 8, 1:24 AM CDT	Flash Flood Warning	EWX	Medina	111 min
Apr 8, 1:30 AM CDT	Severe Thunderstorm Warning	EWX	Bexar	60 min
Apr 8, 1:50 AM CDT	Severe Thunderstorm Warning	EWX	Guadalupe	40 min
Apr 8, 2:05 AM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Gonzales	40 min
Apr 8, 2:08 AM CDT	Flash Flood Warning	EWX	Bexar, Guadalupe	3 hr
Apr 8, 2:13 AM CDT	Tornado Warning	EWX	Bexar, Wilson	47 min
Apr 8, 2:46 AM CDT	Severe Thunderstorm Warning	EWX	Caldwell	59 min
Apr 8, 2:54 AM CDT	Severe Thunderstorm Warning	EWX	Guadalupe	51 min
Apr 8, 3:07 AM CDT	Flash Flood Warning	EWX	Caldwell	2 hr
Apr 8, 3:11 AM CDT	Flash Flood Warning	EWX	Medina	2 hr
Apr 8, 3:18 AM CDT	Flash Flood Warning	EWX	Medina	117 min
Apr 8, 3:34 AM CDT	Severe Thunderstorm Warning	EWX	Medina	41 min
Apr 8, 4:13 AM CDT	Flash Flood Warning	EWX	Atascosa	4 hr
Apr 8, 4:59 AM CDT	Flash Flood Warning	EWX	Bexar, Guadalupe	2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every 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; radar from the NEXRAD Level II archive.