Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 131, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Dec 23, 2002, 5:43 PM CST for Bexar County, Texas. It was in force for 62 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Dec 23, 2002, 5:43 PM CST (23:43 UTC)
- Expired
- Dec 23, 2002, 6:45 PM CST
- In force
- 62 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County Bexar County, TX
The radar
The Austin/San Antonio radar (KEWX), 58 km from the middle of the area, began a volume at 23:44 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 23, 6:35 PM CST | Thunderstorm Wind | San Antonio, TX | Trees were blown down by severe thunderstorm winds at the west edge of the city of San Antonio near the intersection of Marbach Road and Loop 410. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Dec 23, 3:35 PM CST | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.7 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.
- Mixed-layer CAPE
- 122 J/kg
- Mixed-layer CIN
- -129 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS54 KEWX 232343
SVRSAT
TXC029-240045-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
543 PM CST MON DEC 23 2002
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
BEXAR
* UNTIL 645 PM CST
* AT 543 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 29 MILES SOUTHWEST OF HELOTES...OR ABOUT 3
MILES NORTHEAST OF HONDO...MOVING EAST AT 25 MPH.
* THE SEVERE THUNDERSTORM WILL BE...
4 MILES SOUTH OF HELOTES AT 640 PM
3 MILES NORTHWEST OF LEON VALLEY AT 645 PM
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
LAT...LON 2936 9878 2935 9878 2947 9819 2960 9836
2975 9843 2970 9878
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 23, 2:50 AM CST | Severe Thunderstorm Warning | EWX | Bandera, Bexar, Kendall | 25 min |
| Dec 23, 3:49 AM CST | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Llano | 41 min |
| Dec 23, 4:03 AM CST | Severe Thunderstorm Warning | EWX | Hays, Travis | 42 min |
| Dec 23, 6:07 AM CST | Tornado Warning | EWX | Hays, Travis | 53 min |
| Dec 23, 7:00 AM CST | Tornado Warning | EWX | Travis, Williamson | 30 min |
| Dec 23, 7:29 AM CST | Tornado Warning | EWX | Williamson | 31 min |
| Dec 23, 7:43 AM CST | Tornado Warning | EWX | DeWitt | 47 min |
| Dec 23, 8:08 AM CST | Severe Thunderstorm Warning | EWX | Fayette, Lavaca | 52 min |
| Dec 23, 8:58 AM CST | Severe Thunderstorm Warning | EWX | Fayette | 47 min |
| Dec 23, 9:03 AM CST | Severe Thunderstorm Warning | EWX | Lee | 27 min |
| Dec 23, 9:16 AM CST | Tornado Warning | EWX | Fayette | 29 min |
| Dec 23, 4:28 PM CST | Severe Thunderstorm Warning | EWX | Edwards | 62 min |
| Dec 23, 4:49 PM CST | Severe Thunderstorm Warning | EWX | Real | 56 min |
| Dec 23, 5:06 PM CST | Tornado Warning | EWX | Kerr | 24 min |
| Dec 23, 5:12 PM CST | Tornado Warning | EWX | Kerr | 18 min |
| Dec 23, 5:23 PM CST | Severe Thunderstorm Warning | EWX | Kerr | 52 min |
| Dec 23, 5:26 PM CST | Severe Thunderstorm Warning | EWX | Medina | 64 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.