Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 108, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 8, 2002, 9:22 PM CDT for Atascosa County, Wilson County, Texas. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 8, 2002, 9:22 PM CDT (02:22 UTC)
- Expired
- Oct 8, 2002, 10:15 PM CDT
- In force
- 53 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Atascosa County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 79 km from the middle of the area, began a volume at 02:22 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.
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 nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 2.4 hours before the alert went out and 173 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
- 1970 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 957 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.8
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 Oct 8, 8:55 PM CDT, 27 minutes earlier.
Area forecast discussion, Oct 8, 8:55 PM CDT, 27 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
855 PM CDT TUE OCT 8 2002
MAIN CHANGE ON THE UPDATE IS TO RECONFIGURE THE FLASH FLOOD WATCH TO
INCLUDE THE SOUTHEAST COUNTIES. STILL EXPECTING A COUPLE OF MORE
IMPULSES TO ROTATE AROUND THE UPPER LOW LOCATED OVER SE NEW MEXICO
TO SWING EASTWARD ACROSS THE CWFA. THESE IMPULSES WILL TRIGGER
ADDITIONAL ROUNDS OF SHOWERS AND THUNDERSTORMS INTO WEDNESDAY
MORNING.
PRELIM NUMBERS...
AUS 070/082 065/080 059 +75
DRT 069/085 065/085 060 853
SAT 071/083 066/082 060 864
.EWX...FLASH FLOOD THROUGH 6 AM CDT WEDNESDAY FOR ALL OF SOUTH
CENTRAL TEXAS AND THE HILL COUNTRY.
13/18/03Hazardous weather outlook, Oct 8, 6:00 AM CDT, 15 hours 22 minutes before
TXZ171>173-183>194-202>209-217>225-228-091200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CDT TUE OCT 8 2002 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE... A FLASH FLOOD WATCH IS IN EFFECT THROUGH TONIGHT...FOR PORTIONS OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. THIS WATCH INCLUDES THE COUNTIES OF... ATASCOSA...BANDERA...BASTROP...BEXAR...BLANCO...BURNET...CALDWELL... COMAL...DIMMIT...EDWARDS...FRIO...GILLESPIE...GUADALUPE...HAYS... KENDALL...KERR...KINNEY...LEE...LLANO...MAVERICK...MEDINA...REAL... TRAVIS...UVALDE...VAL VERDE...WILLIAMSON...WILSON AND ZAVALA. NUMEROUS SHOWERS AND THUNDERSTORMS ARE DEVELOPING OVER SOUTH CENTRAL TEXAS AND THE HILL COUNTRY AS A STRONG UPPER LEVEL STORM SYSTEM OVER MEXICO CONTINUES TO MOVE NORTHEAST AND INTERACTS WITH ABUNDANT MOISTURE OVER TEXAS. RAINFALL TOTALS THROUGH TODAY COULD APPROACH 4 TO 8 INCHES. THE THREAT FOR HEAVY RAIN IS EXPECTED TO CONTINUE WELL INTO WEDNESDAY. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY OR TONIGHT. .DAYS TWO THROUGH SEVEN... SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER THE REGION THROUGH WEDNESDAY INTO WEDNESDAY NIGHT. A FLASH FLOOD WATCH MAY BE ISSUED. CLEARING SKIES WITH RAIN ENDING BY THURSDAY...FOLLOWED BY PARTLY CLOUDY TO MOSTLY SUNNY SKIES INTO THE WEEKEND.
In the hours before
Local storm report, Oct 8, 8:25 PM CDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
825 PM CDT TUE OCT 8 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1120 AM 6SW DRIFTWOOD TX TORNADO
10/08/02 HAYS MOTORIST REPORT THROUGH
HAYS COUNTY SHERIFF OF
TORNADO TOUCHDOWN AND TWO
TRUCKS BLOWN OFF OF TEXAS
HIGHWAY 12.
0528 PM NEW BRAUNFELS TX 60 MPH TSTM WIND GUST
10/08/02 COMAL 50 TO 60 MPH DOWNBURST
WINDS ALONG A 5 MILE PATH
FROM OAK RUN SUBDIVISON TO
GRUENE. REPORTED BY OFF
DUTY NWS PERSONNEL AT TWO
LOCATIONS.
0700 PM MAXWELL TX WIND DAMAGE
10/08/02 CALDWELL BLUEBONNET ELECTRIC COOP
REPORTS POWER POLE DOWN.
0700 PM 8NE LOCKHART TX WIND DAMAGE
10/08/02 CALDWELL BLUEBONNET ELECTRIC COOP
REPORTS POWER POLES DOWN IN
THE TOWN OF DALE AND
WIDESPREAD POWER OUT IN
DALE.
0528 PM NEW BRAUNFELS TX .75 INCH HAIL
10/08/02 COMAL HAIL FROM 0528 TO 0533 PM
CDT IN OAK RUN SUBDIVISION.
REPORTED BY OFF DUTY NWS
PERSONNEL.
26/JWZThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 8, 8:00 PM CDT | Flash Flood Warning | EWX | Guadalupe | 4 hr |
| Oct 8, 8:47 PM CDT | Flash Flood Warning | EWX | Atascosa, Wilson | 3 hr |
| Oct 8, 9:32 PM CDT | Flash Flood Warning | EWX | Caldwell | 4 hr |
| Oct 8, 10:32 PM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Oct 8, 10:59 PM CDT | Flash Flood Warning | EWX | Kinney, Val Verde | 3 hr |
| Oct 8, 11:51 PM CDT | Flash Flood Warning | EWX | Guadalupe | 114 min |
| Oct 9, 1:02 AM CDT | Flash Flood Warning | EWX | Bandera, Bexar, Kinney, Maverick, Medina, Real and 1 more | 4 hr |
| Oct 9, 1:27 AM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell, Fayette, Gonzales, Guadalupe, Wilson | 4 hr |
| Oct 9, 3:17 AM CDT | Flash Flood Warning | EWX | Atascosa | 3 hr |
| Oct 9, 4:57 AM CDT | Flash Flood Warning | EWX | Caldwell, Gonzales, Guadalupe, Wilson | 2 hr |
| Oct 9, 10:16 AM CDT | Flash Flood Warning | EWX | Frio, Zavala | 3 hr |
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; radar from the NEXRAD Level II archive.