Alert archive / Texas / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 45, NWS Austin/San Antonio, TX

April 29, 1989Webb County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 29, 1989, 6:35 PM CDT for Webb County, Texas. It was in force for 55 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 29, 1989, 6:35 PM CDT (23:35 UTC)
Expired: Apr 29, 1989, 7:30 PM CDT
In force: 55 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Webb 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

Time	Report	Where	Remark
Apr 29, 7:25 PM CDT	Hail 1.75	Webb, 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

Del Rio, TX (KDRT), launched 12:00Z, 11.6 hours before the alert went out and 232 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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

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, Apr 29, 2:56 PM CDT, 3 hours 39 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.

Special weather statement, Apr 29, 4:01 PM CDT, 2 hours 34 minutes before

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Special weather statement, Apr 29, 4:04 PM CDT, 2 hours 31 minutes before

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Special weather statement, Apr 29, 4:56 PM CDT, 1 hour 39 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Special weather statement, Apr 29, 5:58 PM CDT, 37 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE AUSTIN TX
555 PM CDT SAT APRIL 19 1989

...THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM...

JUST BEFORE 6 PM...RADAR SHOWED WIDESPREAD RAIN AND THUNDERSTORM
ACTIVITY SOUTHWEST THROUGH NORTHWEST OF AUSTIN.  THE MOST INTENSE
STORMS WERE ALONG THE UPPER HIGHLAND LAKES AND WESTERN HILL COUNTRY.

RAINFALL RATES OF ONE TO TWO INCHES PER HOUR DOTTED SPOTS AROUND
GOLDTHWAITE...BURNET...ROUND MOUNTAIN AND FREDERICKSBURG.  ALSO
ONE TO THE DISTANT SOUTHEAST BETWEEN SHINER AND HALLETSVILLE.

PERSONS IN THE HILL COUNTRY AND CENTRAL TEXAS SHOULD REMAIN ALERT
AND KEEP UP WITH LATTER STATEMENTS...FORECASTS AND POSSIBLE WARN/INGS.

Special weather statement, Apr 29, 6:04 PM CDT, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
600 PM CDT THU APR 29 1989

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

AT 550 PM AN AREA OF STRONG TO INTENSE THUNDERSTORMS BEGAN ABOUT 30
MILES SOUTHEAST OF DEL RIO ON THE RIO GRANDE. THESE STORMS WERE MOVING
TO THE EAST AT AROUND 10 MPH. OTHER SHOWERS AND WEAKER THUNDERSTORMS
EXTENDED NORTH TO DEL RIO AND THE SOUTHEAST CORNER OF VAL VERDE COUNTY.
VERY STRONG WINDS...DANGEROUS LIGHTNING...AND LARGE HAIL CAN BE EXPECTED
WITH STORMS OF THIS STRENGTH. PEOPLE TRAVELLING SOUTH TOWARDS EAGLE PASS
SHOULD EXPECTED TO ENCOUNTER THESE THUNDERSTORMS.

LIGHTNING IS DANGEROUS AT ALL TIMES...IT IS FREQUENT NEAR INTENSE
THUNDERSTORMS. STAYING INDOORS AND AWAY FROM WINDOWS IS THE MOST
SENSIBLE COURSE OF ACTION DURING AN INTENSE LIGHTNING STORM.

ANOTHER AREA OF STRONG THUNDERSTORMS IS IN THE NORTH OF VAL VERDE COUNTY
EXTENDING FROM 50 MILES NORTHWEST OF DEL RIO...NEAR PANDALE TO THE EAST
TOWARDS JUNCTION...90 MILES NORTHEAST OF DEL RIO. MARBLE SIZE HAIL WAS
REPORTED WITH ONE OF THESE THUNDERSTORMS NEAR HIGHWAY 163 IN SOUTHERN
CROCKETT COUNTY. PEOPLE LIVING IN THE NORTH OF VAL VERDE COUNTAY AND
MOTORISTS TRAVELLING NORTH TOWARDS SAN ANGELO SHOULD BE ALERT FOR THESE
STRONG THUNDERSTORMS. THE THUNDERSTORMS WERE MOVING TO THE SOUTHEAST AT
AROUND 10 MPH.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 7:04 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa	56 min
Apr 28, 7:20 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt	60 min
Apr 28, 7:55 PM CDT	Severe Thunderstorm Warning	EWX	Karnes	65 min
Apr 28, 8:06 PM CDT	Severe Thunderstorm Warning	EWX	La Salle	69 min
Apr 28, 9:10 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	50 min
Apr 29, 3:10 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kerr	65 min
Apr 29, 4:46 PM CDT	Severe Thunderstorm Warning	EWX	Bandera	59 min
Apr 29, 5:13 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	62 min
Apr 29, 6:24 PM CDT	Severe Thunderstorm Warning	EWX	La Salle	66 min

Nearby

Severe Thunderstorm Warnings in Texas, 1989 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.