Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 19, NWS Austin/San Antonio, TX

April 24, 1990Lee County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 24, 1990, 8:15 PM CDT for Lee County, Texas. It was in force for 60 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
Apr 24, 1990, 8:15 PM CDT (01:15 UTC)
Expired
Apr 24, 1990, 9:15 PM CDT
In force
60 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Lee County, TX

The radar

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

What was reported inside it

TimeReportWhereRemark
Apr 24, 8:30 PM CDTHail 1.25Lee, TX

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 00:00Z, 1.3 hours before the alert went out and 238 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 1990-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1792 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 1990-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 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
1792 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
973 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
239 m²/s²
Significant tornado parameter
1.1
Supercell composite
5.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAUS 250126
SVRAUS
TXC287-250215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
815 PM CDT TUE APR 24 1990
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  915 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH CENTRAL TEXAS
          ...EASTERN LEE
 
RADAR INDICATES A POSSIBLE SEVERE THUNDERSTORM BETWEEN GIDDINGS AND
LAKE SUMMERVILLE MOVING TOWARDS THE NORTHEAST AT NEAR 15 MPH. THIS
STORM MAY ALSO CAUSE VERY HEAVY RAINFALL IN A SHORT PERIOD OF TIME
ALONG WITH STRONG GUSTY WINDS.
 
THIS STORM WILL BE MOVING INTO THE WESTERN PORTIONS OF BURLESON COUNTY
WITHIN THE NEXT HOUR ADDING TO BURLESONS COUNTIES FLOODING PROBLEMS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS-.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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 24, 6:17 PM CDT, 1 hour 58 minutes before
TXZ036-037-250000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
605 PM CDT TUE APR 24 1990

A THUNDERSTORM PASSED OVER THE CITY OF AUSTIN BETWEEN 5 AND 6 PM
CAUSING A NARROW BAND OF PEA TO MARBLE SIZE HAIL AND BRIEF HEAVY
RAIN FROM DOWNTOWM ALONG THE WEST SIDE OF AUSTIN NEAR MOPAC AND
AS FAR NORTH AS PFLUGERVILLE AND GEORGETOWN. NO DAMAGE HAS BEEN REPORTED.

RAINFALL AMOUNTS WERE BETWEEN ONE TENTH TO ONE THIRD OF AN INCH.

SHOWER AND THUNDERSTORMS CONTINUE OVER AN AREA BOUNDED BY TEMPLE TO THE
NORTH MARBLE FALLS TO THE WEST AND LOCKHART TO THE SOUTH. THIS AREA
EXTENDS EASTWARD TO NEAR HUNTSVILLE. MOVEMENT IS TOWARDS THE NORTHEAST
AT NEAR 25 MPH.

A FEW OF THE THUNDERSTORM0S MAY CAUSE MINOR FLOODING FROM HEAVY
RAINS ALONG WITH SMALL HAIL FOR THE NEXT FEW HOURS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 7:01 PM CDTFlash Flood WarningEWXMilam3 hr
Apr 24, 9:25 PM CDTFlash Flood WarningEWXBurleson4 hr

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.