Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 44, NWS Austin/San Antonio, TX

May 4, 1987Zavala County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 4, 1987, 7:37 AM CDT for Zavala County, Texas. It was in force for 68 min.

The area

The counties it named.

The facts

Issued: May 4, 1987, 7:37 AM CDT (12:37 UTC)
Expired: May 4, 1987, 8:45 AM CDT
In force: 68 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Zavala 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, 0.6 hours before the alert went out and 119 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: 2 J/kg
Mixed-layer CIN: -303 J/kg
Mixed-layer LCL: 1459 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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, May 4, 4:21 AM CDT, 3 hours 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
420 AM CDT MON MAY 4 1987

...HEAVY THUNDERSTORMS INDICATED IN THE DEL RIO AREA...

AT 410 AM CDT A LINE OF HEAVY THUNDERSTORMS WAS MOVING THROUGH THE
DEL RIO...LAUGHLIN AFB AREA. WHILE THE MOST INTENSE AREA OF
THUNDERSTORMS WAS NEAR THE GARDNER STATE PARK...A VERY HEAVY
THUNDERSTORM WAS LOCATED JUST EAST OF DEL RIO NEAR LAUGHLIN AFB.
AN INTENSE THUNDERSTORM WAS ALSO LOCATED NEAR BRACKETVLLE. THIS LINE
OF THUNDERSTORMS WAS MOVING TO THE SOTHEAST AT 20 MPH. INDIVIDUAL
STORMS WITHIN THIS LINE WAS MOVING EAST AT 20 MPH.

BRIEF HEAVY RAIN...SMALL HAIL...STRONG GUSTY WINDS AND DANGEROUS
LIGHTNING ARE POSSIBLE WITH THESE STORMS. GOLFBALL SIZE HAIL HAS
BEEN REPORTED OUT OF THE THUNDERSTORMS ACROSS GONZALES COUNTY.

BOATERS ON LAKE AMISTAD SHOULD REMAIN ALERT TO THIS STORM SITUATION
AND BE PREPARED TO SEEK SAFE SHELTER IF NECESSARY.

Special weather statement, May 4, 4:59 AM CDT, 2 hours 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
455 AM CDT MON MAY 4 1987

AT 450 AM CDT WEATHER SERVICE RADAR INDICATED A VERY STRONG THUNDER
STORM NEAR BLANCO.DANGEROUS LIGHTNING...HEAVY RAIN...SMALL HAIL AND
STRONG WINDS WILL LIKELY ACCOMPANY THIS STORM AS IT MOVES THROUGH
BLANCO AND TRAVIS COUNTIES.

A BROKEN LINE OF THUNDERSTORMS CONTINUED ACROSS SOUTH CENTRAL TEXAS
AND THE HILL COUNTRY EXTENDING FROM NORTH OF WACO TO 20 MILES WEST
OF THE AUSTIN AIRPORT TO ACROSS THE HIIL COUNTRY TO BRACKETTVILLE
IN KINNEY COUNTY.
THE NORTHERN PART OF THIS LINE MOVING EASTSOUTHEAST AT 20 MPH. THE
SOUTHERN PORTION OF THE LINE BECOMING MORE STATIONARY.

STAY TUNED TO NOAA WEATHER RADIO...LOCAL RADIO AND T.V. FOR LATER
STATEMENTS AND POSSIBLE WARNINGS.

Special weather statement, May 4, 6:11 AM CDT, 1 hour 26 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, May 4, 6:22 AM CDT, 1 hour 15 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, May 4, 6:22 AM CDT, 1 hour 15 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, May 4, 6:55 AM CDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
645 AM CDT MON MAY 4 1987

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1100 AM CDT THIS MONDAY
MORNING FOR HAYS AND CALDWELL COUNTIES...

AT 640 AM CDT WEATHER SERVICE RADAR INDICATED MODERATE TO STRONG
THUNDERSTORMS OCCURRING ALONG A LINE  FROM AUSTIN TO SAN MARCOS
TO SAN ANTONIO. DANGEROUS LIGHTNING...BRIEF HEAVY RAIN...SMALL HAIL
AND STRONG WINDS WILL LIKELY ACCOMPANY THESE THUNDERSTORMS. OTHER
SHOWERS AND THUNDERSTORMS ARE INDICATED FROM NORTH OF WACO TO
TEMPLE TO AUSTIN...GENERALLY ALONG INTERSTATE 35.

THE LINE OF THUNDERSTORMS MOVING SOUTHEAST AT 20 MPH.

PERSONS IN AND NEAR THE WATCH AREA ARE URGED TO LISTERN FOR THE
L}ATEST INFORMATION AND POSSIBLE WARNINGS.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 10:12 PM CDT	Severe Thunderstorm Warning	EWX	Travis	63 min
May 3, 10:37 PM CDT	Severe Thunderstorm Warning	EWX	Williamson	68 min
May 3, 11:10 PM CDT	Severe Thunderstorm Warning	EWX	Caldwell	65 min
May 3, 11:44 PM CDT	Tornado Warning	EWX	Caldwell	61 min
May 4, 12:09 AM CDT	Tornado Warning	EWX	Gonzales	66 min
May 4, 12:56 AM CDT	Severe Thunderstorm Warning	EWX	Lavaca	64 min
May 4, 1:39 AM CDT	Severe Thunderstorm Warning	EWX	Edwards	66 min
May 4, 2:47 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Edwards, Kerr, Real, Uvalde	58 min
May 4, 2:47 AM CDT	Severe Thunderstorm Warning	EWX	Kinney	58 min
May 4, 3:47 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Medina, Uvalde	58 min
May 4, 3:47 AM CDT	Severe Thunderstorm Warning	EWX	Kendall, Kerr	58 min
May 4, 4:39 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Medina	66 min
May 4, 5:59 AM CDT	Severe Thunderstorm Warning	EWX	Bexar	61 min
May 4, 6:21 AM CDT	Severe Thunderstorm Warning	EWX	Guadalupe, Wilson	69 min
May 4, 6:39 AM CDT	Severe Thunderstorm Warning	EWX	Maverick	66 min
May 4, 10:17 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit	73 min
May 4, 11:49 AM CDT	Severe Thunderstorm Warning	EWX	Webb	56 min

Nearby

Severe Thunderstorm Warnings in Texas, 1987 Every severe thunderstorm warning in 1987

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.