Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 107, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 8, 2002, 6:06 PM CDT for Guadalupe County, Texas. It was in force for 54 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
- Oct 8, 2002, 6:06 PM CDT (23:06 UTC)
- Expired
- Oct 8, 2002, 7:00 PM CDT
- In force
- 54 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County Guadalupe County, TX
The radar
The Austin/San Antonio radar (KEWX), 14 km from the middle of the area, began a volume at 23:07 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 12:00Z, 11.1 hours before the alert went out and 229 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
- 722 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 912 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KEWX 082306 SVRSAT TXC187-090000- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 606 PM CDT TUE OCT 8 2002 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... GUADALUPE * UNTIL 700 PM CDT * AT 606 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER GUADALUPE COUNTY...OR ABOUT 7 MILES SOUTH OF SAN MARCOS...MOVING EAST AT 20 MPH. 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 2975 9791 2968 9799 2969 9776 2980 9785
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, 2:23 PM CDT, 3 hours 43 minutes earlier.
Area forecast discussion, Oct 8, 2:23 PM CDT, 3 hours 43 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 223 PM CDT TUE OCT 8 2002 HEAVY RAIN AND FLASH FLOOD EVENT UNDERWAY FOR MUCH OF THE TEXAS HILL COUNTRY AND PARTS OF SOUTH CENTRAL TEXAS. THE CULPRIT...A SLOW MOVING UPPER LOW...IS CURRENTLY INCHING EASTWARD OVER EL PASO. A PACIFIC MID LEVEL MOISTURE TAP IS OBVIOUS ON ENHANCED WV IMAGERY... AND A LOW LEVEL GULF OF MEXICO MOISTURE TAP CAN BE SEEN FROM VAD WIND PROFILES AND SURFACE OBS WITH SOUTHEAST WINDS AND 70S DEW POINT TEMPS. WILL LEAVE FLASH FLOOD WATCH IN PLACE THROUGH 6 AM CDT WEDNESDAY MORNING. MAY SHIFT FROM A FLASH FLOOD THREAT TO A SEVERE THUNDERSTORMS THREAT OVERNIGHT ALONG THE RIO GRANDE VALLEY AND WEDNESDAY ACROSS THE REMAINDER OF THE CWA...AS DRY MID LEVEL AIR WORKS OVER THE AREA WITH COOLER TEMPS ALOFT. HOWEVER...SPC DOES NOT HAVE SOUTHCENTRAL TEXAS OUTLOOKED FOR SEVERE AT THIS POINT. THE TREND FOR WEDNESDAY THROUGH THURSDAY WILL BE DECREASING POPS AND DEW POINT TEMPS...AS THE LOW EJECTS ACROSS THE TEXAS PANHANDLE AND THE ASSOCIATED 500MB TROUGH TAIL-DRAGS ACROSS SOUTHCENTRAL TEXAS. COLD FRONT TO FOLLOW IT DOWN LATE WEDNESDAY INTO THURSDAY...BUT BASICALLY IS JUST A DRY AIRMASS...LEADING TO LARGER DIURNAL TEMP FLUCTUATIONS. AREAS OF FOG FORECAST FOR THURSDAY MORNING...MAY END UP WIDESPREAD DENSE FOG BASED ON CLEARING WITH SATURATED GROUNDS. WILL SEE A BREAK FROM LATE THURSDAY THROUGH SATURDAY WITH MAX TEMPS A CAT HIGHER EACH DAY. THEN...A COLD FRONT EXPECTED TO COME BARRELING SOUTH ACROSS THE CWA SUNDAY...THIS TIME FOR REAL...NO UPPER LOW OVER NORTHERN MEXICO TO HOLD IT UP. GOING FOR SHOWERS ALONG AND JUST BEHIND THE FRONT BASED ON LATEST GFS SOLUTION. PRELIM NUMBERS... AUS TT 070/082 065/080 059 11+75 DRT TB 069/085 065/085 060 11853 SAT TB 071/083 066/082 060 11864 .EWX...FLASH FLOOD WATCH WEST AND CNTRL PARTS OF SOUTH CENTRAL TEXAS THROUGH 6 AM CDT...WEDNESDAY. 11/02/KW
Hazardous weather outlook, Oct 8, 6:00 AM CDT, 12 hours 6 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.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 7, 9:39 PM CDT | Flash Flood Warning | EWX | Gillespie, Kendall, Kerr | 111 min |
| Oct 7, 10:16 PM CDT | Flash Flood Warning | EWX | Val Verde | 3 hr |
| Oct 8, 12:34 AM CDT | Flash Flood Warning | EWX | Edwards, Kinney, Val Verde | 5 hr |
| Oct 8, 3:32 AM CDT | Flash Flood Warning | EWX | Bandera, Edwards, Kerr, Kinney, Maverick, Real and 1 more | 3 hr |
| Oct 8, 4:58 AM CDT | Flash Flood Warning | EWX | Val Verde | 4 hr |
| Oct 8, 6:55 AM CDT | Flash Flood Warning | EWX | Bandera, Edwards, Kerr, Kinney, Maverick, Real and 1 more | 2 hr |
| Oct 8, 9:14 AM CDT | Flash Flood Warning | EWX | Bandera, Edwards, Kerr, Kinney, Real, Val Verde | 3 hr |
| Oct 8, 11:54 AM CDT | Flash Flood Warning | EWX | Bandera, Edwards, Gillespie, Kerr, Kinney, Maverick and 3 more | 3 hr |
| Oct 8, 11:56 AM CDT | Tornado Warning | EWX | Uvalde | 49 min |
| Oct 8, 12:46 PM CDT | Tornado Warning | EWX | Uvalde | 44 min |
| Oct 8, 5:32 PM CDT | Severe Thunderstorm Warning | EWX | Comal, Hays | 58 min |
| Oct 8, 5:50 PM CDT | Tornado Warning | EWX | Caldwell, Hays | 55 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; radar from the NEXRAD Level II archive.