Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 110, NWS Austin/San Antonio, TX

October 22, 2002Bastrop County, Caldwell County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 22, 2002, 12:26 AM CDT for Bastrop County, Caldwell County, Texas. It was in force for 64 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Oct 22, 2002, 12:26 AM CDT (05:26 UTC)
Expired: Oct 22, 2002, 1:30 AM CDT
In force: 64 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

Counties Bastrop County, TX, Caldwell County, TX

The radar

The Austin/San Antonio radar (KEWX), 62 km from the middle of the area, began a volume at 05:28 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
Oct 22, 12:30 AM CDT	Thunderstorm Wind	Fentress, TX	A severe thunderstorm downburst struck near Fentress, destroying two mobile home and damaging six others.

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.

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, 5.4 hours before the alert went out and 249 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2027 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 784 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.2

Open this sounding in Storm Lab

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, 3 hours 41 minutes earlier.

Area forecast discussion, Oct 21, 8:45 PM CDT, 3 hours 41 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, 16 hours 54 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 6 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.

The 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, 12:50 AM CDT	Severe Thunderstorm Warning	EWX	Williamson	55 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, 2002 Every 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.