Alert archive / Texas / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 41, NWS Austin/San Antonio, TX

April 29, 1989Edwards County, Kerr County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 29, 1989, 3:10 PM CDT for Edwards County, Kerr County, Texas. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Apr 29, 1989, 3:10 PM CDT (20:10 UTC)
Expired
Apr 29, 1989, 4:15 PM CDT
In force
65 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Edwards County, TX, Kerr 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

Del Rio, TX (KDRT), launched 12:00Z, 8.2 hours before the alert went out and 122 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 12:00Z on 1989-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1286 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 12:00Z on 1989-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
1286 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
1100 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 292012
SVRSAT
TXC137-265-292115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
310 PM CDT SAT APR 29 1989
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...NORTHEASTERN EDWARDS...WESTERN KERR
 
AT 310 PM CDT...WEATHER SERVICE RADAR INDICATED INTENSE THUNDERSTORMS
JUST SOUTH OF JUNCTION TEXAS AND 15 MILES WEST SOUTHWEST OF JUNCTION
MOVING TO THE SOUTHEAST AT 10 MPH.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...HAIL
3/4 INCH OR MORE IN DIAMETER...FREQUENT LIGHTNING AND VERY HEAVY
RAIN.
 
WHEN A THUNDERSTORM THREATENS...SEEK SHELTER INSIDE A HOME OR
BUILDING AWAY FROM DOORS AND WINDOWS.  REFRAIN FROM USING ELECTRICAL
APPLIANCES.

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 29, 1:54 PM CDT, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
150 PM CDT THU APR 29 1989

AT 145 PM AND AREA OF SHOWERS AND THUNDERSTORMS IN MEXICO WAS MOVING
NORTHEAST INTO THE UNITED STATES AT AROUND 10 MPH. THE LEADING EDGE
OF THE SHOWERS AND THUNDERSTORMS WAS JUST BEGINNING TO CROSS THE RIO
GRANDE NEAR DEL RIO AT 145 PM. INSIDE THIS AREA OF SHOWERS AND
THUNDERSTORMS ARE SOME STRONG THUNDERSTORMS WHICH WERE ABOUT 40 MILES
SOUTHWEST OF DEL RIO.

IF THE STRONG THUNDESTORMS MAINTAIN THEIR PRESENT STRENGTH THEY WILL
TAKE SEVERAL HOURS TO REACH DEL RIO AND SOUTHEAST VAL VEDE COUNTY.

BOATERS AND RECREATIONIST ON LAKE AMISTAD SHOULD BEGIN TO TAKE SAFETY
PRECAUTIONS NOW AS THE STRONG WINDS AND LIGHTNING WITH A STRONG
THUNDERSTORM CAN OCCURR A CONSIDERABLE DISTANCE AWAY FROM THE STORM.
Special weather statement, Apr 29, 2:16 PM CDT, 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
215 PM CDT SAT APR 29 1989

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR THE HILL COUNTRY...EDWARDS
   PLATEAU...AND PORTIONS OF SOUTH CENTRAL TEXAS UNTIL 9 PM CDT...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR PORTIONS OF CENTRAL TEXAS INCLUDING THE HILL COUNTRY...EDWARDS
PLATEAU...AND PORTIONS OF SOUTH CENTRAL TEXAS UNTIL 9 PM CDT TONIGHT.
THE WATCH IS ALONG AND 80 MILES EAST AND WEST OF A LINE FROM 70 MILES
WEST OF COTULLA TEXAS TO 40 MILES NORTH NORTHWEST OF WACO TEXAS.  THE
WATCH INCLUDES BEXAR COUNTY AND THE SAN ANTONIO METROPOLITAN AREA.

VERY MOIST AND UNSTABLE IN COMBINATION WITH AN UPPER DISTURBANCE
APPROACHING FROM THE WEST AND A STATIONARY FRONT NEAR THE HILL COUNTRY
ARE EXPECTED TO PRODUCE INTENSE THUNDERSTORMS OVER CENTRAL TEXAS
THIS AFTERNOON AND EVENING.  THE THREAT OF SEVERE THUNDERSTORMS
COULD SPREAD EAST INTO THE EAST PORTIONS OF SOUTH TEXAS LATER THIS
AFTERNOON ALSO.

THUNDERSTORMS WERE ALREADY DEVELOPING RAPIDLY OVER THE HILL COUNTRY
BETWEEN KERRVILLE AND SAN ANGELO TEXAS...AND WEST OF DEL RIO EARLY
THIS AFTERNOON.   THESE THUNDERSTORMS WERE MOVING NORTH NORTHEAST AT
15 MPH.  LARGE HAIL...STRONG AND DAMAGING WINDS...DANGEROUS
LIGHTNING...AND VERY HEAVY RAINS CAUSING SOME FLOODING ARE POSSIBLE
WITH THE THUNDERSTORMS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE
FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.  PERSONS IN
CENTRAL TEXAS SHOULD BE ALERT FOR THREATENING WEATHER AND LISTEN FOR
LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 29, 2:21 PM CDT, 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
216 PM CDT SAT APRIL 19 1989

...THUNDERSTORMS ONCE AGAIN FORMING OUT OVER THE WESTERN HILL COUNTRY...

AT 2 15 PM...RADAR INDICATED RAPIDLY DEVELOPING THUNDERSTORMS NEAR
JUNCTION...KERRVILLE...SONORA AND SOUTH OF SAN ANGELO.  DUE TO NEARLY
TOTAL VERTICAL DEVELOPMENT, LITTLE MOVEMENT HAS BEEN NOTED WITH THESE
STORMS DURING THE LAST HOUR.
Special weather statement, Apr 29, 2:56 PM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
255 PM CDT THU APR 29 1989

...DEL RIO AND VAL VERDE COUNTY ARE IN A SEVERE THUNDERSTORM WATCH
UNTIL 9 PM CDT...

AT 245 PM AN INTENSE THUNDERSTORM WAS ABOUT 30 MILES SOUTHWEST OF
DEL RIO IN MEXICO. THIS STORM WAS MOVING TO THE EAST AT AROUND 15 MPH.
OTHER SHOWERS AND THUNDERSTORMS ASSOCIATED WITH IT EXTENDED NORTH OVER
DEL RIO AND SOUTHEAST VAL VERDE COUNTY. VERY STRONG WINDS...DANGEROUS
LIGHTNING...AND HAIL CAN BE EXPECTED WITH A STORM OF THIS STRENGTH. THE
PRESENT COURSE OF THE THUNDERSTORM IF MAINTAINED WOULD MISS DEL RIO AND
SOUTHEAST VAL VERDE COUNTY. HOWEVER THE STORM NEEDS TO BE WATCHED
CLOSELY. ALL PERSONS IN DEL RIO AND SOUTHEAST VAL VERDE COUNTY ARE URGED
TO CHECK FOR LATER UPDATES ON THIS THUNDERSTORM.

BOATERS AND RECREATIONIST ON LAKE AMISTAD SHOULD TAKE SAFETY PRECAUTIONS
NOW AS THE STRONG WINDS AND LIGHTNING WITH A STRONG THUNDERSTORM CAN
OCCURR A CONSIDERABLE DISTANCE AWAY FROM THE STORM.

AOTHER AREA OF STRONG AND INTENSE THUNDERSTORMS IS DEVELOPING NORTH
OF VAL VERDE COUNTY ABOUT 75 MILES NORTH OF DEL RIO. MOTORISTS
TRAVELLING NORTH ON HIGHWAY 277 TOWARDS SAN ANGELO SHOULD EXPECT
TO ENCOUNTER STRONG OR INTENSE THUNDERSTORMS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 7:04 PM CDTSevere Thunderstorm WarningEWXAtascosa56 min
Apr 28, 7:20 PM CDTSevere Thunderstorm WarningEWXDeWitt60 min
Apr 28, 7:55 PM CDTSevere Thunderstorm WarningEWXKarnes65 min
Apr 28, 8:06 PM CDTSevere Thunderstorm WarningEWXLa Salle69 min
Apr 28, 9:10 PM CDTSevere Thunderstorm WarningEWXFayette50 min
Apr 29, 4:46 PM CDTSevere Thunderstorm WarningEWXBandera59 min
Apr 29, 5:13 PM CDTSevere Thunderstorm WarningEWXMaverick62 min
Apr 29, 6:24 PM CDTSevere Thunderstorm WarningEWXLa Salle66 min
Apr 29, 6:35 PM CDTSevere Thunderstorm WarningEWXWebb55 min

Nearby

Severe Thunderstorm Warnings in Texas, 1989Every severe thunderstorm warning in 1989

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.