Alert archive / Texas / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 98, NWS Austin/San Antonio, TX

September 13, 1993Gillespie County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Sep 13, 1993, 1:17 AM CDT for Gillespie County, Texas. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Sep 13, 1993, 1:17 AM CDT (06:17 UTC)
Expired
Sep 13, 1993, 2:00 AM CDT
In force
43 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Gillespie County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.3 hours before the alert went out and 211 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 1993-09-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 545 joules per kilogram.LCLLFCEL10008507005003002001001 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 1993-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.193958Sfc1 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
545 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1171 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Sep 12, 7:22 PM CDT, 5 hours 55 minutes before
TXZ039-130100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
720 PM CDT SUN SEP 13 1993

WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WERE DEVELOPING ACROSS SOUTH
OF SAN ANTONIO AND MOVING NORTHWARD ACROSS SAN ANTONIO THIS EVENING.
A THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED NEAR HELOTES...WHILE OTHER
SHOWERS AND THUNDERSTORMS WERE MOVING OVER THE DOWNTOWN AREA OF SAN
ANTONIO.

THESE THUNDERSTORMS WILL PRODUCE BRIEF BLINDING RAIN AND GUSTY WINDS
DURING THE NEXT HOUR IN AND AROUND BEXAR COUNTY.
Special weather statement, Sep 13, 12:05 AM CDT, 1 hour 12 minutes before
TXZ034-035-130715-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1205 AM CDT MON SEP 13 1993

...THUNDERSTORMS CONTINUE ACROSS PORTIONS OF THE HILL COUNTRY...

AT MIDNIGHT...SHOWERS AND THUNDERSTORMS STRETCHED ACROSS GILLESPIE...
BLANCO...BURNET AND WILLIAMSON COUNTIES.  THE THUNDERSTORMS...SOME
WITH VERY HEAVY RAINS...WERE FROM KERRVILLE TO FREDERICKSBURG
AND TO WEST OF JOHNSON CITY.

THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 20 MILES
AN HOUR.

UP TO 6 INCHES OF RAIN FELL OVER PARTS OF KERR COUNTY AS THESE STORMS
MOVED ACROSS KERRVILLE.  PERSONS IN GILLESPIE AND SURROUNDING COUNTIES
OF THE HILL COUNTRY SHOULD KEEP ALERT TO THE POSSIBILTY OF HEAVY RAINS
AND LOCALIZED FLOODING.

MOTORIST ARE ADVISED TO SLOW DOWN AND WATCH FOR FLOODED LOW WATER
CROSSING.  NEVER ATTEMPT CROSSING FLOODED ROADWAYS AS YOU COULD BE SWEPT
DOWNSTREAM.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS SHOULD CONDITIONS
WARRANT.
HOHMANN
Special weather statement, Sep 13, 12:08 AM CDT, 1 hour 9 minutes before
TXZ034-035-130715-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1205 AM CDT MON SEP 13 1993

...THUNDERSTORMS CONTINUE ACROSS PORTIONS OF THE HILL COUNTRY...

AT MIDNIGHT...SHOWERS AND THUNDERSTORMS STRETCHED ACROSS GILLESPIE...
BLANCO...BURNET AND WILLIAMSON COUNTIES.  THE THUNDERSTORMS...SOME
WITH VERY HEAVY RAINS...WERE FROM KERRVILLE TO FREDERICKSBURG
AND TO WEST OF JOHNSON CITY.

THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 20 MILES
AN HOUR.

UP TO 6 INCHES OF RAIN FELL OVER PARTS OF KERR COUNTY AS THESE STORMS
MOVED ACROSS KERRVILLE.  PERSONS IN GILLESPIE AND SURROUNDING COUNTIES
OF THE HILL COUNTRY SHOULD KEEP ALERT TO THE POSSIBILTY OF HEAVY RAINS
AND LOCALIZED FLOODING.

MOTORIST ARE ADVISED TO SLOW DOWN AND WATCH FOR FLOODED LOW WATER
CROSSING.  NEVER ATTEMPT CROSSING FLOODED ROADWAYS AS YOU COULD BE SWEPT
DOWNSTREAM.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS SHOULD: CONDITIONS
WARRANT.
HOHMANN

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 13, 1:17 AM CDTFlash Flood WarningEWXGillespie118 min
Sep 13, 6:58 PM CDTFlash Flood WarningEWXVal Verde4 hr

Nearby

Severe Thunderstorm Warnings in Texas, 1993Every severe thunderstorm warning in 1993

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.