Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 111, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 22, 2002, 12:50 AM CDT for Williamson County, Texas. It was in force for 55 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 22, 2002, 12:50 AM CDT (05:50 UTC)
- Expired
- Oct 22, 2002, 1:45 AM CDT
- In force
- 55 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Williamson County, TX
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 5.8 hours before the alert went out and 245 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
- 6 J/kg
- Mixed-layer CIN
- -323 J/kg
- Mixed-layer LCL
- 603 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
710 WUUS54 KEWX 220550 SVRSAT TXC491-220645- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1249 AM CDT TUE OCT 22 2002 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... WILLIAMSON * UNTIL 145 AM CDT * AT 1249 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 16 MILES SOUTHWEST OF TAYLOR...OR ABOUT 6 MILES SOUTHEAST OF PFLUGERVILLE... MOVING NORTHEAST AT 35 MPH. THIS STORM PRODUCE GOLF BALL SIXE HAIL AS IT MOVED SOUTH SOUTHERN AUSTIN. * THE SEVERE THUNDERSTORM WILL BE... 4 MILES SOUTHEAST OF TAYLOR AT 105 AM 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.
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 21, 8:45 PM CDT, 4 hours 5 minutes earlier.
Area forecast discussion, Oct 21, 8:45 PM CDT, 4 hours 5 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 845 PM CDT MON OCT 21 2002 WILL REMOVE EVENING WORDING ON ONGOING FORECAST AND MAKE ONLY MINOR CHANGES TO CURRENT FORECAST. MYRIAD OF PERTURBATIONS SEEN IN THE TROPICAL FLOW ON WATER VAPOR IMAGERY HEADING FOR CENTRAL TEXAS. SURFACE BASED BOUNDARY BETWEEN EAGLE PASS AND LAREDO...EAST TO CORPUS CHRISTI...WILL SLOWLY LIFT NORTHEAST. MOISTURE OVERRUNNING THIS BOUNDARY WILL INCREASE CLOUDINESS OVER WESTERN COUNTIES. WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE NIGHT. 06/08/PM PREVIOUS DISCUSSION.... CLOUDS ERODING THE TOP OF THE COOL LAYER AS SUNSHINE BREAKS IN SOUTH OF SFC FRONT NEAR A EGP-HDO-VCT LINE. STORMS STILL RAGING N OF H9 BOUNDARY AND AHEAD OF MID LEVEL S/WV MOVING NEWD THRU THE BIG BEND. STORMS ALONG AND N OF FREDERICKSBURG-AUS LINE WILL THREATEN MINIMAL SVR WND AND HAIL THRU EARLY EVENING. THRU THU...SWLY MID-UPPER FLOW WILL CARRY WEAK S/WVS OVER SC TX...WITH RAIN CHANCES VARYING FROM SLGT CHC TO CHC EACH DAY. NEXT COLD FRONT DROPS SWD INTO SC TX LATE THU-EARLY FRI. REST OF PERIOD LOOKS FAIRLY CLOUDY WITH DIMINISHING RAIN CHANCES SAT INTO MON BEHIND COLD FRONT. FCST TONITE...STRONG TSTMS ENDING OVER THE NRN ZONES THIS EVENING. CONTINUED CLOUDY WITH A SLGT CHC OF TSTMS THRU THE NITE. COOL MINS. FCST TUE...CLOUDY MORNING...MOSTLY CLOUDY AFTN WITH LOW CHANCE OF MOSTLY AFTN AND EVENING TSTMS. HIGHS NEAR 80. LOWS NEAR 70. FCST WED AND THU...CLOUDY MORNINGS...PARTLY CLOUDY WITH A CHANCE OF TSTMS AFTN AND EVENING. WARMER NIGHTTIME MIN TEMPS DUE TO SLY WINDS. FCST FRI...THE FRONT ARRIVES WITH WIDESPREAD THUNDERSTORMS...MOST NUMEROUS AND HEAVY EAST OF I-35. COOLER WITH HIGHS NEAR 60. LOWS IN THE 50S AND 60S. FCST SAT AND SUN...MOSTLY CLOUDY WITH DECREASED RAIN CHANCES. REMAINING COOL WITH HIGHS IN THE 60S AND LOWS IN THE 50S. 09/01/PM PRELIMS... AUS EE 063/079 068/082 069 2335 DRT EE 067/082 069/084 069 2224 SAT EE 067/080 071/082 069 2335 .EWX...NONE.
Hazardous weather outlook, Oct 21, 7:32 AM CDT, 17 hours 18 minutes before
TXZ171>173-183>194-202>209-217>225-228-220000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 732 AM CDT MON OCT 21 2002 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE... SHOWERS AND GARDEN VARIETY THUNDERSTORMS ARE FORECAST...BUT SEVERE THUNDERSTORMS ARE NOT EXPECTED TODAY OR TONIGHT. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. .DAYS TWO THROUGH SEVEN... A SLIGHT RISK FOR SEVERE THUNDERSTORMS WILL EXIST ON TUESDAY AND WEDNESDAY...MAINLY ACROSS THE WESTERN-MOST COUNTIES WHERE ATMOSPHERIC INSTABILITY WILL BE GREATEST. NO OTHER HAZARDS ARE FORESEEN FROM THURSDAY THROUGH NEXT WEEKEND.
In the hours before
Special weather statement, Oct 21, 11:20 PM CDT, 1 hour 30 minutes before
TXZ171>173-183>194-202>209-217>225-228-220900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1120 PM CDT MON OCT 21 2002 ...SCATTERED SHOWERS AND THUNDERSTORMS TONIGHT AND TUESDAY MORNING... A WEATHER SYSTEM MOVING IN RAPIDLY FROM THE WEST WILL CAUSE ENOUGH INSTABILITY FOR SCATTERED SHOWERS AND THUNDERSTORMS TO CONTINUE TONIGHT AND TUESDAY MORNING. SCATTERED SHOWERS AND THUNDERSTORMS STRETCHED FROM WEST OF DEL RIO TO SOUTH OF EAGLE PASS AND EXTENDED EASTWARD ACROSS THE HILL COUNTRY AND SOUTH CENTRAL TEXAS TO NEAR AND NORTH OF AUSTIN TO NORTH OF CUERO. SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 25 MPH. PERIODS OF BRIEF HEAVY RAIN...WIND GUSTS AT 20 TO 35 MPH... AND OCCASIONAL DEADLY LIGHTNING WILL ACCOMPANY THESE SHOWERS AND THUNDERSTORMS.
Local storm report, Oct 22, 12:28 AM CDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
1228 AM CDT TUE OCT 22 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1205 AM 4 SW AUSTIN TX 1.75 INCH HAIL
10/22/02 TRAVIS REPORTED BY MEDIAThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 11:49 PM CDT | Severe Thunderstorm Warning | EWX | Hays, Travis | 56 min |
| Oct 22, 12:26 AM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Caldwell | 64 min |
| Oct 22, 1:10 AM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Lee | 65 min |
| Oct 22, 1:19 AM CDT | Severe Thunderstorm Warning | EWX | Caldwell, Fayette | 56 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.