Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 7, NWS Austin/San Antonio, TX

February 9, 1990Bexar County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 9, 1990, 5:41 PM CST for Bexar County, Texas. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Feb 9, 1990, 5:41 PM CST (23:41 UTC)
Expired
Feb 9, 1990, 6:22 PM CST
In force
41 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Bexar County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 11.7 hours before the alert went out and 223 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, Corpus Christi, TX at 12:00Z on 1990-02-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 90 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, Corpus Christi, TX at 12:00Z on 1990-02-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
90 J/kg
Mixed-layer CIN
-598 J/kg
Mixed-layer LCL
751 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 092342
SVRSAT
TXC029-100030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
541 PM CST FRI FEB 9 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...BEXAR
 
GOLFBALL SIZE HAIL WAS REPORTED IN NORTHWEST SAN ANTONIO IN A LINE OF
THUNDERSTORMS MOVING SOUTHEASTWoARD ACROSS THE COUNTY.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...HAIL
3/4 INCH OR MORE IN DIAMETER...FREQUENT 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.

In the hours before

Special weather statement, Feb 9, 1:42 PM CST, 3 hours 59 minutes before
TXZ036-037-092045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
140 PM CST FRI FEB 9 1990

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 6 PM CST TODAY
FOR TRAVIS...WILLIAMSON...BURLESON AND MILAM COUNTIES OF CENTRAL TEXAS.

WEATHER RADAR INDICATED THUNDERSTORMS FROM NEAR KILLEEN NORTHEAST TO
NORTH OF WACO.  OTHER SHOWERS AND LIGHT RAIN WAS LOCATED FROM SOUTH OF
AUSTIN NORTHWARD ACROSS THE AUSTIN AREA AND ON NORTH TO BETWEEN WACO
AND COLLEGE STATION.  THUNDERSTORMS WERE MOVING NORTHEAST AT NEAR 45 MPH
...WHILE THE AREA WAS MOVING SLOWLY EASTWARD.
Special weather statement, Feb 9, 3:38 PM CST, 2 hours 3 minutes before
TXZ034-037-092300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
345 PM CST FRI FEB 9 1990

...THUNDERSTORMS FORMING IN THE HILL COUNTRY TO THE WEST OF AUSTIN...

AT 330 PM...WEATHER RADAR INDICATED THUNDERSTORMS FORMING OVER
THE WESTERN BORDER OF TRAVIS AND NORTHERN BLANCO COUNTY.  RAINFALL
RATES FROM THESE STORMS WERE NEAR ONE INCH PER HOUR IN A FEW SPOTS
BETWEEN ROUND MOUNTAIN AND MARBLE FALLS.  MOVEMENT IS TO THE NORTH
EAST AT  ABOUT 30 MPH.  THIS STORM SHOULD CROSS WILLIAMSON COUNTY WITHIN
THE NEXT HOUR OR SO.

...A TORNADO WATCH IS IN EFFECT FOR A LARGE PORTION OF CENTRAL AND
SOUTHEAST TEXAS.  THIS INCLUDES TRAVIS AND ALL SURROUNDING COUNTIES...
Special weather statement, Feb 9, 4:11 PM CST, 1 hour 30 minutes before
TXZ034>039-092300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
410 PM CST FRI FEB 9 1990

...A TORNADO WATCH IS IN EFFECT FOR PARTS OF SOUTH CENTRAL AND SOUTHEAST
TEXAS UNTIL 930 PM CST THIS EVENING...

THUNDERSTORMS WERE DEVELOPING RAPIDLY OVER PARTS OF THE HILL COUNRTY
LATE THIS AFTERNOON.  THESE STORMS...WHICH WERE MOVING TO THE EAST AT 25
MPH...WERE FORMING IN AN AREA OF WARM...MOIST...AND UNSTABLE AIR LOCATED
ALONG A COLD FRONT.  THIS FRONT WAS ON A LINE FROM EAST OF FORTH WORTH
TO NORTHWEST OF SAN ANTONIO.

REMEMBER...A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE
FORMATION OF TORNADOES IN AND CLOSE TO THE WATCH AREA.

LARGE HAIL...DAMAGING WINDS...AND FREQUENT LIGHTNING MAY ACCOMPANY THESE
STORMS.  STRONG GUSTY WINDS AND FALLING TEMPERATURES ARE EXPECTED OVER
SOUTH TEXAS TONIGHT.

ADDITIONAL STATEMENTS WILL BE ISSUED THROUGHOUT THE NIGHT FROM THE
LOCAL NATIONAL WEATHER SERVICE OFFICES...KEEPING YOU INFORMED OF THIS
SEVERE WEATHER SITUATION.
Special weather statement, Feb 9, 4:33 PM CST, 1 hour 8 minutes before
TXZ034>039-092300-

SPECIAL WEATHER STATEMENT...CORRECTION...
NATIONAL WEATHER SERVICE SAN ANTONIO TX
430 PM CST FRI FEB 9 1990

...A TORNADO WATCH IS IN EFFECT FOR PARTS OF SOUTH CENTRAL AND SOUTHEAST
TEXAS UNTIL 900 PM CST THIS EVENING...

...THE WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND SOUTH OF A
LINE FROM 25 MILES SOUTHWEST OF AUSTIN TO 60 MILES EAST NORTHEAST OF
LUFKIN.  BEXAR COUNTY IS NOT INCLUDED IN THE WATCH AREA.  COUNTIES
NEAREST TO BEXAR COUNTY AFFECTED BY THE TORNADO WATCH ARE: COMAL...
GUADALUPE...WILSON...AND GONZALES.

THUNDERSTORMS WERE DEVELOPING RAPIDLY OVER PARTS OF THE HILL COUNRTY
LATE THIS AFTERNOON.  THESE STORMS...WHICH WERE MOVING TO THE EAST AT 25
MPH...WERE FORMING IN AN AREA OF WARM...MOIST...AND UNSTABLE AIR LOCATED
ALONG A COLD FRONT.  THIS FRONT WAS ON A LINE FROM EAST OF FORTH WORTH
TO NORTHWEST OF SAN ANTONIO.

REMEMBER...A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE
FORMATION OF TORNADOES IN AND CLOSE TO THE WATCH AREA.

LARGE HAIL...DAMAGING WINDS...AND FREQUENT LIGHTNING MAY ACCOMPANY THESE
STORMS.  STRONG GUSTY WINDS AND FALLING TEMPERATURES ARE EXPECTED OVER
SOUTH TEXAS TONIGHT.

ADDITIONAL STATEMENTS WILL ;BE ISSUED THROUGHOUT THE NIGHT FROM THE
LOCAL NATIONAL WEATHER SERVICE OFFICES...KEEPING YOU INFORMED OF THIS
SEVERE WEATHER SITUATION.
Special weather statement, Feb 9, 4:39 PM CST, 1 hour 2 minutes before
TXZ034-037-100000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
445 PM CST FRI FEB 9 1990

...THUNDERSTORMS MOVING EASTWARD TOWARD AUSTIN...

AT 430 PM...WEATHER RADAR INDICATED THUNDERSTORMS DEVELOPING IN
NORTHERN HAYS AND THE WESTERN PORTION OF TRAVIS COUNTY.  RAINFALL
RATES FROM THESE STORMS WERE NEAR ONE INCH PER HOUR IN A FEW SPOTS
JUST NORTH OF DRIPPING SPRINGS AND NEAR LAKE TRAVIS.  MOVEMENT OF
THESE STORMS IS SLOW AND TO THE EAST.  THESE THUNDERSTORMS COULD
MOVE INTO THE AUSTIN AREA WITHIN THE NEXT HOUR.

AT 403 PM THE WIND SHIFTED AT THE WEATHER OFFICE TO THE NORTHWEST
WITH GUSTS TO 31 MPH.

...A TORNADO WATCH IS IN EFFECT FOR A LARGE PORTION OF CENTRAL AND
SOUGTHEAST TEXAS.  THIS INCLUDES TRAVIS AND ALL SURROUNDING COUNTIES...
Special weather statement, Feb 9, 5:02 PM CST, 39 minutes before
TXZ034>039-100000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
500 PM CST FRI FEB 9 1990

...A TORNADO WATCH IS IN EFFECT FOR PARTS OF SOUTH CENTRAL AND SOUTHEAST
TEXAS UNTIL 900 PM CST THIS EVENING...INCLUDING COMAL...GUADALUPE...
GONZALES...AND WILSON COUNTIES...

AT 500 PM CST...NATIONAL WEATHER SERVICE RADAR INDICATED SCATTERED
THUNDERSTORMS...WITH VERY HEAVY RAIN...FROM NEAR AUSTIN TO NEAR CANYON
LAKE.  OTHER THUNDERSTORMS WERE DEVELOPING IN THE TEXAS HILL COUNTRY.
MOVEMENT WAS TO THE EAST AT 20 MPH.

PERIODS OF HEAVY RAINS...STRONG AND DAMAGING WINDS...DANGEROUS LIGHTNING
AND HAIL ARE POSSIBLE WITH THESE THUNDERSTORMS.  REMEMBER...A TORNADO
WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES TO DEVELOP IN AND
CLOSE TO THE WATCH AREA.

A COLD FRONT HAD MOVED THROUGH THE AUSTIN AREA LATE THIS AFTERNOON AND
WAS EXPECTED TO REACH THE SAN ANTONIO METROPOLITAN AREA WITHIN THE NEXT
HOUR.  VERY GUSTY WINDS OF OV2ER 30 MPH CAN BE EXPECTED FROM THE
NORTHWEST BEHIND THE FRONT.

THUNDERSTORMS ARE EXPECTED TO CONTINUE DEVELOPING THIS EVENING OVER
SOUTH CENTRAL AND SOUTHEAST TEXAS...AND PERSONS SHOULD REMAINED TUNED TO
LATER WEATHER DEVELOPMENTS.

Nearby

Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990

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.