Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 15, NWS Austin/San Antonio, TX

April 5, 1990Mills County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 5, 1990, 10:22 PM CDT for Mills County, Texas. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Apr 5, 1990, 10:22 PM CDT (03:22 UTC)
Expired
Apr 5, 1990, 11:30 PM CDT
In force
68 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Mills 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

Stephenville/Cla, TX (KSEP), launched 00:00Z, 3.4 hours before the alert went out and 93 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, Stephenville/Cla, TX at 00:00Z on 1990-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1723 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, Stephenville/Cla, TX at 00:00Z on 1990-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 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
1723 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1551 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
286 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAUS 060333
SVRAUS
TXC333-060430-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
1022 PM CDT THU APR 5 1990
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTH CENTRAL TEXAS
          ...NORTHERN MILLS
 
AT 1015 RADAR SHOWED A SEVERE THUNDERSTORM IN NORTHERN MILLS COUNTY
NEAR MULIN. MOVEMENT IS TO THE EAST AT 25 MPH. LARGE HAIL AND STRONG
WINDS HAVE BEEN ASSOCIATED WITH THESE STORMS.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

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, Apr 5, 8:03 PM CDT, 2 hours 19 minutes before
TXZ035>039-045>047-054-060500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO, TX
800 PM CDT THU APR 5 1990

...STORMY AND COLDER WEATHER HEADED FOR SOUTH TEXAS...

A STRONG LATE SEASON COLD FRONT STRETCHING ACROSS NORTH TEXAS WAS MOVING
STEADILY SOUTH TOWARD SOUTH TEXAS EARLY TONIGHT.  SEVERE THUNDERSTORMS
WERE DEVELOPING AHEAD AND ALONG THE COLD FRONT WITH A FEW OF THE STORMS
SPAWNING TORNADOES IN NORTH TEXAS.   A TORNADO WATCH IS IN EFFECT UNTIL
MIDNIGHT FOR THE NORTH PORTIONS OF THE TEXAS HILL COUNTRY...AND COULD BE
EXPANDED SOUTH INTO SOUTH CENTRAL AND SOUTHEAST TEXAS LATER TONIGHT.

IN ADDITION TO THE STORMY WEATHER...GUSTY NORTH WINDS OF 30 TO 40 MPH
WERE BEING REPORTED BEHIND THE COLD FRONT.  TEMPERATURES WERE DROPPING
AN AVERAGE OF 15 AND 20 DEGREES BEHIND THE FRONT.

THUNDERSTORMS...SOME SEVERE...ARE EXPECTED TO DEVELOP LATER TONIGHT AND
EARLY FRIDAY MORNING IN SOUTH TEXAS AS THE COLD AIR COLLIDES WITH THE
VERY MOIST AND UNSTABLE AIR OVER THE AREA.

PERSONS IN ALL OF SOUTH CENTRAL AND SOUTHEAST TEXAS SHOULD REMAIN
TUNED TO WEATHER DEVELOPMENTS AS THE RISK OF SEVERE WEATHER WILL BE
HIGH.  BEFORE GOING TO BED TONIGHT...YOU SHOULD CHECK THE LATEST
WEATHER BULLETINS OR FORECASTS.
Special weather statement, Apr 5, 8:05 PM CDT, 2 hours 17 minutes before
TXZ030-060300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
755 PM CDT THU APR 6 1990

A TORNADO WATCH IS IN EFFECT UNTIL MIDNIGHT FOR MILLS...SAN SABA AND
LAMPASAS COUNTIES.

AT 740 PM RADAR INDICATED THUNDERSTORMS FROM NEAR COLEMAN NORTHEAST
TO NEAR FORT WORTH.  SOME OF THESE THUNDERSTORMS HAVE PRODUCED SEVERE
WEATHER ACROSS PARTS OF NORTH TEXAS.  THESE STORMS WERE MOVING EAST
HOWEVER THUNDERSTORMS COULD DEVELOPE FUTHER SOUTH DURING THE EVENING.

PEOPLE IN AND NEAR THE WATCH AREA SHOULD KEEP A CLOSE WATCH ON THE
WEATHER AND LISTEN FOR LATER STATEMENTS OR WARNINGS.
Special weather statement, Apr 5, 9:10 PM CDT, 1 hour 12 minutes before
TXZ030-060300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
905 PM CDT THU APR 6 1990

A TORNADO WATCH IS IN EFFECT UNTIL MIDNIGHT FOR MILLS...SAN SABA AND
LAMPASAS COUNTIES.

AT 850 PM RADAR INDICATED THUNDERSTORMS WERE DEVELOPING FUTHER TO THE
WEST AND SOUTHWEST NEAR THE COLD FRONT MOVING SOUTHEAST THROUGH
NORTHERN AREAS OF THE STATE.  THIS LINE OF THUNDERSTORMS EXTENDED
FROM NEAR SAN ANGELO TO NORTH OF BROWNWOOD TO THE FORT WORTH AREA.
THIS LINE OF THUNDERSTORMS HAS PRODUCED SEVERE WEATHER ACROSS NORTH
TEXAS.

THE LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST AT NEAR 15 MPH WHILE
THE THUNDERSTORMS IN THE LINE WAS MOVING EAST AT NEAR 25 MPH.

PEOPLE IN AND NEAR THE WATCH ,AREA SHOULD KEEP A CLOSE WATCH ON THE
WEATHER AND LISTEN FOR LATER STATEMENTS OR WARNINGS.
Special weather statement, Apr 5, 10:22 PM CDT, 0 minutes before
TXZ034>039-054-060500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO, TX
1022 PM CDT THU APR 5 1990

...STRONG THUNDERSTORMS MOVING TOWARD THE TEXAS HILL COUNTRY...

A COLD FRONT CONTINUED TO PUSH SOUTHWARD TONIGHT...MOVING THROUGH THE
SAN ANGELO AREA AT AROUND 930 PM.  WIND GUSTS OF 56 MPH WERE REPORTED AT
SAN ANGELO WHEN THE FRONT MOVED THROUGH.   STRONG THUNDERSTORMS
EXTENDING FROM SOUTH OF SAN ANGELO TO NEAR WACO WERE MOVING SOUTHEAST
TOWARD THE HILL COUNTRY AT 25 MPH.

A TORNADO WATCH REMAINS IN EFFECT FOR THE NORTH PORTIONS OF THE HILL
COUNTRY...AND THE WATCH MAY BE EXTENDED SOUTH WITHIN THE NEXT HOUR OR
TWO.  THUNDERSTORMS...SOME SEVERE...ARE EXPECTED TO DEVELOP AND MOVE
INTO SOUTH CENTRAL TEXAS NEAR OR AFTER MIDNIGHT.

LOOSE OBJECTS SHOULD BE STORED AWAY OR SECURED TONIGHT AS THEY WILL
LIKELY BE BLOWN AWAY OR BECOME AIRBORNE BY THE STRONG NORTH WINDS.

PERSONS IN SOUTH CENTRAL TEXAS SHOULD STAY TUNED TO LOCAL RADIO...TV OR
NOAA WEATHER RADIO FOR THE LATEST WEATHER DEVELOPMENTS AND KEEP ALERT
FOR APPROACHING THUNDERSTORMS FROM THE NORTH.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 11:01 PM CDTSevere Thunderstorm WarningEWXLampasas44 min

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.