Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 19, NWS Lubbock, TX

April 13, 1999Garza County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Apr 13, 1999, 5:10 PM CDT for Garza County, Texas. It was in force for 50 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 13, 1999, 5:10 PM CDT (22:10 UTC)
Expired: Apr 13, 1999, 6:00 PM CDT
In force: 50 min
Issued by: NWS Lubbock, TX
Area: Whole counties

County Garza County, TX

What was reported inside it

Time	Report	Where	Remark
Apr 13, 5:20 PM CDT	Hail 1.75	Post, 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 13, 2:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 10.2 hours before the alert went out and 161 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: 1211 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 559 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 280 m²/s²
0-3 km storm-relative helicity: 395 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 6.4

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 13, 11:40 AM CDT, 5 hours 30 minutes before

TXZ021>044-131555-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE LUBBOCK TX
1140 AM CDT TUE APR 13 1999

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS FROM THE CENTRAL
PORTIONS OF THE SOUTH PLAINS EASTWARD INTO THE LOW ROLLING PLAINS
THIS AFTERNOON INTO THE EVENING.  THIS MODERATE RISK AREA IS
GENERALLY ALONG AND EAST OF A I-27 AND US 87 LINE. TO THE WEST OF THIS
LINE A SLIGHT RISK OF SEVERE THUNDERSTORMS IS POSSIBLE...MAINLY THIS
AFTERNOON.

A SURFACE LOW WAS LOCATED IN SOUTHEAST NEW MEXICO WITH A DRYLINE
EXTENDING SOUTHWARD.  A COLD FRONT TWAS EXTENDING SOUTHWEST OF THE
LOW TO JUST NORTH OF EL PASO WITH A WARM FRONT EXTENDING EAST
NORTHEAST TO NEAR CHILDRESS.  AN UPPER LEVEL LOW LOCATED OVER THE
SOUTHERN SECTION OF THE NEW MEXICO ARIZONA BORDER WILL MOVE EAST AND
INTERACT WITH THE DRYLINE...WARM FRONT AND COLD FRONT THIS AFTERNOON
AND EVENING.  LARGE HAIL AND DAMAGING WINDS WILL BE THE MOST LIKELY
THREATS HOWEVER...AN ISOLATED TORNADO COULD OCCUR IN THE VICINITY OF
THE WARM FRONT.

SPOTTER ACTIVATION WILL BE LIKELY THIS AFTERNOON FOR THE SOUTH
PLAINS AND SOUTHERN PANHANDLE.  THE LOW ROLLING PLAINS WILL MOST
LIKELY NEED TO BE ACTIVATED THIS EVENING.

Special weather statement, Apr 13, 3:18 PM CDT, 1 hour 52 minutes before

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Special weather statement, Apr 13, 3:18 PM CDT, 1 hour 52 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.
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The office that day

Everything else NWS Lubbock, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 1:50 PM CDT	Severe Thunderstorm Warning	LUB	Parmer	35 min
Apr 13, 2:42 PM CDT	Severe Thunderstorm Warning	LUB	Bailey, Cochran, Hockley, Lamb	48 min
Apr 13, 3:00 PM CDT	Tornado Warning	LUB	Lamb	30 min
Apr 13, 5:49 PM CDT	Tornado Warning	LUB	Hall	26 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999 Every severe thunderstorm warning in 1999

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.