Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 148, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Dec 30, 2002, 3:29 PM CST for Travis County, Texas. It was in force for 61 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
- Dec 30, 2002, 3:29 PM CST (21:29 UTC)
- Expired
- Dec 30, 2002, 4:30 PM CST
- In force
- 61 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County Travis County, TX
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
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 30, 12:00 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 9.5 hours before the alert went out and 281 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
- 966 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
176
WUUS54 KEWX 302129
SVRSAT
TXC453-302230-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
329 PM CST MON DEC 30 2002
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
TRAVIS
* UNTIL 430 PM CST
* AT 329 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER LOST CREEK...OR ABOUT 4 MILES NORTH OF
LOST CREEK...MOVING NORTHEAST AT 40 MPH.
* THE SEVERE THUNDERSTORM WILL BE...
OVER WELLS BRANCH AT 340 PM
OVER WINDEMERE AT 345 PM
ANOTHER SEVERE THUNDERSTORM WILL MOVE FROM HAYS COUNTY INTO SOUTH
AUSTIN BY 345 PM.
LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THESE SEVERE
THUNDERSTORMS. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN
A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.
A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND DO 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 3030 9808 3004 9772 3027 9748 3041 9741
3047 9763 3041 9776 3052 9793
$$What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 30, 3:25 PM CST, 4 minutes earlier.
Area forecast discussion, Dec 30, 3:25 PM CST, 4 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 325 PM CST MON DEC 30 2002 NO CHANGES FROM EARLIER THINKING BEYOND FIRST 12 HOURS. PREFRONTAL TROF WORKING ACROSS CWA AT THIS TIME. TRUE COLD FRONT SHOULD ARRIVE HILL COUNTRY ZONES AFTER 02Z...CENTRAL ZONES AROUND MIDNIGHT. WITH LOW STILL DIGGING SOUTHWARD AM HESITANT TO REMOVE POPS CENTRAL ZONES BEFORE MORNING. 10/18/VL/KW PRELIMS... AUS 042 062/032 068 5000 DRT 039 069/039 070 0000 SAT 045 065/034 070 4000 .EWX...TORNADO WATCH UNTIL 6 PM.
Hazardous weather outlook, Dec 30, 5:50 AM CST, 9 hours 39 minutes before
TXZ171>173-183>194-202>209-217>225-228-311200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 550 AM CST MON DEC 30 2002 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE... A POTENT UPPER LEVEL LOW AND ASSOCIATED COLD FRONT NEAR EL PASO WILL PROGRESS SOUTHEAST TODAY AND INTERACT WITH MOISTURE FROM THE GULF OF MEXICO TO PRODUCE NUMEROUS THUNDERSTORMS OVER SOUTH CENTRAL TEXAS. CHANCES FOR THUNDERSTORMS WILL BE GREATEST ALONG AND EAST OF INTERSTATE 35 BETWEEN SAN ANTONIO AND AUSTIN. THESE STORMS WILL LIKELY BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WINDS. ISOLATED TORNADOES WILL BE POSSIBLE AS WELL. THE GREATEST THREAT FOR SEVERE THUNDERSTORMS WILL BE ALONG THE COLD FRONT THIS AFTERNOON. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED ACROSS THE EASTERN HALF OF SOUTH CENTRAL TEXAS TODAY.
In the hours before
Local storm report, Dec 30, 3:19 PM CST, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
319 PM CST MON DEC 30 2002
TIME(CST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0225 PM HELOTES TX TORNADO
12/30/02 BEXAR UNCONFIRMED TORNADO
REPORTED BY BEXAR COUNTY
FIRE ALARM BETWEEN HELOTES
AND LEON SPRINGS.
KWThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 30, 1:26 PM CST | Severe Thunderstorm Warning | EWX | Kerr, Real | 64 min |
| Dec 30, 1:48 PM CST | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 42 min |
| Dec 30, 1:53 PM CST | Severe Thunderstorm Warning | EWX | Medina | 37 min |
| Dec 30, 1:57 PM CST | Severe Thunderstorm Warning | EWX | Bexar | 63 min |
| Dec 30, 2:05 PM CST | Tornado Warning | EWX | Bexar | 55 min |
| Dec 30, 2:26 PM CST | Tornado Warning | EWX | Comal | 64 min |
| Dec 30, 3:05 PM CST | Tornado Warning | EWX | Hays | 55 min |
| Dec 30, 3:18 PM CST | Tornado Warning | EWX | Caldwell | 57 min |
| Dec 30, 3:28 PM CST | Severe Thunderstorm Warning | EWX | Bexar | 62 min |
| Dec 30, 3:50 PM CST | Severe Thunderstorm Warning | EWX | Guadalupe | 55 min |
| Dec 30, 3:53 PM CST | Severe Thunderstorm Warning | EWX | Comal | 52 min |
| Dec 30, 3:58 PM CST | Tornado Warning | EWX | Bastrop | 62 min |
| Dec 30, 3:59 PM CST | Severe Thunderstorm Warning | EWX | Williamson | 61 min |
| Dec 30, 4:22 PM CST | Tornado Warning | EWX | Williamson | 53 min |
| Dec 30, 5:00 PM CST | Severe Thunderstorm Warning | EWX | Gonzales | 60 min |
| Dec 30, 5:11 PM CST | Tornado Warning | EWX | Bastrop, Fayette, Lee | 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; the sounding from the Mesonet's radiosonde archive.