Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 135, NWS Austin/San Antonio, TX

October 12, 2001Gillespie County, Kerr County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 12, 2001, 9:28 PM CDT for Gillespie County, Kerr County, Texas. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Oct 12, 2001, 9:28 PM CDT (02:28 UTC)
Expired
Oct 12, 2001, 10:30 PM CDT
In force
62 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Gillespie County, TX, Kerr County, TX

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 12, 6:30 PM CDTTornado WatchSPC6 hr
Oct 12, 6:30 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 2.5 hours before the alert went out and 168 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2001-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3303 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2001-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
3303 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1597 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
273 m²/s²
Significant tornado parameter
2.5
Supercell composite
22.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

728 
WUUS54 KEWX 130230
SVRSAT
TXC171-265-130330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
928 PM CDT FRI OCT 12 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  GILLESPIE
  KERR

* UNTIL 1030 PM CDT

* AT 928 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES WEST OF INGRAM...OR ABOUT 12 MILES WEST
  OF KERRVILLE...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  OVER INGRAM AT 945 PM
  3 MILES NORTH OF KERRVILLE AT 1000 PM
  CENTER POINT AT 1015 PM

ANOTHER SEVERE THUNDERSTORM WAS NOTED NEAR STONEWALL AND THE LBJ 
RANCH...MOVING EAST AT 20 MPH

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.


LAT...LON 3026 9961 2996 9964 2994 9923 2987 9895
          3049 9896

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 12, 9:04 PM CDT, 24 minutes earlier.

Area forecast discussion, Oct 12, 9:04 PM CDT, 24 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
904 PM CDT FRI OCT 12 2001

SEVERE STORMS ONGOING ACROSS PORTIONS OF THE EWX CWA AND MUCH MORE
EXPECTED.  SPEED MAX STILL WEST OF UPPER TROUGH OVER ALONG TEXAS/NEW
MEXICO BORDER INTO THE BIG BEND AND APPEARS WILL ROUND THE BASE
AROUND OR JUST AFTER MIDNIGHT.  GOOD SHEAR...DIFFLUENCE AND CAPES
MAINTAIN SEVERE MENTIONS OVERNIGHT.  ONLY UPDATES WILL BE MAINLY FOR
THE HIGHLIGHTS AND POSSIBLY SOME TWEAKING OF VARIABLES.
04/06/08/PM

PERVIOUS DISCUSSION...
AREA LOOKS TO BE ON TRACK FOR SEVERE WEATHER TONIGHT...MAINLY OVER
NORTHERN AND EASTERN SECTIONS. STORMS SHOULD BEGIN OUT WEST LATE
THIS AFTERNOON OR EARLY THIS EVENING AND INTENSIFY AS THEY ENCOUNTER
LOW LEVEL JET OVER HILL COUNTRY INTO SOUTH CENTRAL TEXAS.  BY LATE
EVENING...THUNDERSTORMS SHOULD ALIGN THEMSELVES IN SQUALL LINE
FASHION ALONG EASTERN (NORTH SOUTH ORIENTED) ESCARPMENT...MOVING
EAST RAPIDLY...WITH TORNADOES AND LARGE HAIL POSSIBLY ACCOMPANYING
STORMS.

INTENSITY OF LOW SHOULD ALLOW FOR GOOD WRAP AROUND CLOUDINESS
THROUGH MUCH OF THE DAY ACROSS EASTERN ZONES...WITH WESTERN ZONES
CLEARING RAPIDLY TOMMORROW MORNING.  WIDESPREAD LIGHT TO MODERATE
PRECIPITATION WITH SOME ELEVATED CONVECTION POSSIBLE AFTER FRONT
PASSES LATE TONIGHT AND THIS SHOULD CONTINUE THROUGH ABOUT LATE
MORNING.

MUCH COLDER AIRMASS WILL BUILD ACROSS AREA SATURDAY NIGHT WITH LOWS
DIPPING INTO THE UPPER 30S OVER THE NORTHERN HILLS...40S ELSEWHERE.
SUNDAY LOOKS LIKE ABUNDANT SUNSHINE WITH TEMPERATURES IN THE UPPER
70S TO NEAR 80. A BEAUTIFUL WEEK IS IN STORE NEXT WEEK WITH ANOTHER
SURGE OF COLDER AIR MOVING ACROSS TUESDAY NIGHT AND WEDNESDAY.
SKIES SHOULD REMAIN MOSTLY CLEAR THROUGHOUT MUCH OF THE EXTENDED
PERIOD WITH NORTHWEST TO WESTERLY FLOW ALOFT.  LOW TEMPERATURES WILL
BE IN THE 40S DURING THE FIRST HALF OF THE WORK WEEK...WARMING INTO
THE 50S IN THE LATTER HALF.  HIGHS GENERALLY IN THE 70S MONDAY
THROUGH WEDNESDAY...WARMING INTO THE 80S WEDNESDAY THROUGH FRIDAY.

.PRELIMINARY NUMBERS...
AUS 62/69/44/77 8700
DRT 57/75/46/80 4100
SAT 62/73/42/78 8400

.EWX...NONE.

02/18

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 12, 7:16 PM CDTSevere Thunderstorm WarningEWXEdwards59 min
Oct 12, 7:21 PM CDTSevere Thunderstorm WarningEWXKinney64 min
Oct 12, 7:33 PM CDTTornado WarningEWXKinney57 min
Oct 12, 8:08 PM CDTSevere Thunderstorm WarningEWXEdwards, Real67 min
Oct 12, 8:20 PM CDTSevere Thunderstorm WarningEWXUvalde55 min
Oct 12, 8:37 PM CDTSevere Thunderstorm WarningEWXKerr63 min
Oct 12, 9:06 PM CDTTornado WarningEWXUvalde39 min
Oct 12, 9:27 PM CDTSevere Thunderstorm WarningEWXBlanco48 min
Oct 12, 9:40 PM CDTSevere Thunderstorm WarningEWXKinney50 min
Oct 12, 9:45 PM CDTTornado WarningEWXMedina, Uvalde60 min
Oct 12, 9:52 PM CDTSevere Thunderstorm WarningEWXBandera, Kendall38 min
Oct 12, 9:56 PM CDTTornado WarningEWXBlanco, Gillespie64 min
Oct 12, 10:14 PM CDTSevere Thunderstorm WarningEWXBurnet46 min
Oct 12, 10:27 PM CDTSevere Thunderstorm WarningEWXHays, Travis63 min
Oct 12, 10:30 PM CDTSevere Thunderstorm WarningEWXKendall30 min
Oct 12, 10:44 PM CDTTornado WarningEWXMedina46 min
Oct 12, 10:45 PM CDTSevere Thunderstorm WarningEWXUvalde60 min
Oct 12, 10:49 PM CDTSevere Thunderstorm WarningEWXBexar71 min
Oct 12, 10:55 PM CDTSevere Thunderstorm WarningEWXBurnet, Llano65 min
Oct 12, 11:11 PM CDTSevere Thunderstorm WarningEWXComal49 min
Oct 12, 11:16 PM CDTSevere Thunderstorm WarningEWXWilliamson59 min
Oct 12, 11:25 PM CDTSevere Thunderstorm WarningEWXCaldwell, Guadalupe65 min
Oct 12, 11:25 PM CDTSevere Thunderstorm WarningEWXBastrop65 min
Oct 12, 11:34 PM CDTSevere Thunderstorm WarningEWXMedina56 min
Oct 12, 11:43 PM CDTSevere Thunderstorm WarningEWXKinney47 min
Oct 12, 11:51 PM CDTSevere Thunderstorm WarningEWXUvalde69 min
Oct 12, 11:58 PM CDTSevere Thunderstorm WarningEWXBexar, Comal62 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001

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.