Alert archive / Texas / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 307, NWS Shreveport, LA

September 21, 1992Cass County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Sep 21, 1992, 9:58 PM CDT for Cass County, Texas. It was in force for 47 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: Sep 21, 1992, 9:58 PM CDT (02:58 UTC)
Expired: Sep 21, 1992, 10:45 PM CDT
In force: 47 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Cass County, TX

What was reported inside it

Time	Report	Where	Remark
Sep 21, 10:10 PM CDT	Hail 0.75	Cass, 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

Longview/Gregg, TX (KGGG), launched 00:00Z, 3.0 hours before the alert went out and 84 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: 2834 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1062 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 11.3

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, Sep 21, 5:17 PM CDT, 4 hours 41 minutes before

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Special weather statement, Sep 21, 6:18 PM CDT, 3 hours 40 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 Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 21, 11:41 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	64 min
Sep 22, 12:42 AM CDT	Severe Thunderstorm Warning	SHV	Bossier, De Soto, Red River	43 min
Sep 21, 8:17 PM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	58 min
Sep 21, 9:15 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Little River, Miller	60 min
Sep 21, 9:15 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	60 min
Sep 21, 11:22 PM CDT	Severe Thunderstorm Warning	SHV	Cass, Marion	53 min

Nearby

Severe Thunderstorm Warnings in Texas, 1992 Every severe thunderstorm warning in 1992

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.