Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 231, NWS Houston/Galveston, TX

November 5, 1997Matagorda County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Nov 5, 1997, 2:55 PM CST for Matagorda County, Texas. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Nov 5, 1997, 2:55 PM CST (20:55 UTC)
Expired
Nov 5, 1997, 3:45 PM CST
In force
50 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

County Matagorda County, TX

The radar

The Houston radar (KHGX), 118 km from the middle of the area, began a volume at 20:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.9 hours before the alert went out and 309 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, Lake Charles Mun, LA at 12:00Z on 1997-11-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 1997-11-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1096 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
179 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.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 5, 2:33 PM CST, 22 minutes earlier.

Area forecast discussion, Nov 5, 2:33 PM CST, 22 minutes before
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In the hours before

Special weather statement, Nov 5, 12:33 PM CST, 2 hours 22 minutes before
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<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.
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      <p id="message2">
        Please try again in a few minutes.
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      <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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Special weather statement, Nov 5, 12:35 PM CST, 2 hours 20 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 Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 4, 6:15 PM CSTSevere Thunderstorm WarningHGXMatagorda60 min
Nov 4, 6:36 PM CSTTornado WarningHGXMatagorda54 min
Nov 4, 10:26 PM CSTSevere Thunderstorm WarningHGXBrazoria64 min
Nov 4, 11:01 PM CSTSevere Thunderstorm WarningHGXBrazoria, Matagorda59 min
Nov 4, 11:34 PM CSTSevere Thunderstorm WarningHGXBrazoria41 min
Nov 5, 12:10 AM CSTTornado WarningHGXBrazoria35 min
Nov 5, 2:16 AM CSTSevere Thunderstorm WarningHGXBrazoria59 min
Nov 5, 3:25 AM CSTSevere Thunderstorm WarningHGXBrazoria65 min
Nov 5, 3:59 AM CSTSevere Thunderstorm WarningHGXGalveston61 min
Nov 5, 4:06 AM CSTSevere Thunderstorm WarningHGXHouston69 min
Nov 5, 4:30 AM CSTSevere Thunderstorm WarningHGXMatagorda60 min
Nov 5, 4:35 AM CSTSevere Thunderstorm WarningHGXBrazoria55 min
Nov 5, 5:21 AM CSTSevere Thunderstorm WarningHGXHouston54 min
Nov 5, 5:31 AM CSTSevere Thunderstorm WarningHGXBrazoria59 min
Nov 5, 6:00 AM CSTSevere Thunderstorm WarningHGXHouston60 min
Nov 5, 7:02 AM CSTSevere Thunderstorm WarningHGXHouston58 min
Nov 5, 7:26 AM CSTFlash Flood WarningHGXHouston2 hr
Nov 5, 7:26 AM CSTSevere Thunderstorm WarningHGXTrinity64 min
Nov 5, 8:05 AM CSTSevere Thunderstorm WarningHGXHouston55 min
Nov 5, 8:31 AM CSTFlash Flood WarningHGXHouston, Trinity119 min
Nov 5, 8:47 AM CSTSevere Thunderstorm WarningHGXTrinity58 min
Nov 5, 8:52 AM CSTSevere Thunderstorm WarningHGXPolk68 min
Nov 5, 10:38 AM CSTTornado WarningHGXLiberty37 min

Nearby

Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.