Alert archive / Iowa / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 80, NWS Des Moines, IA

July 28, 1992Greene County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 28, 1992, 4:09 AM CDT for Greene County, Iowa. It was in force for 32 min.

The area

The counties it named.

The facts

Issued: Jul 28, 1992, 4:09 AM CDT (09:09 UTC)
Expired: Jul 28, 1992, 4:41 AM CDT
In force: 32 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Greene County, IA

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 9.2 hours before the alert went out and 182 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: 19 J/kg
Mixed-layer CIN: -329 J/kg
Mixed-layer LCL: 1684 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

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, Jul 28, 3:45 AM CDT, 24 minutes before

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Special weather statement, Jul 28, 3:47 AM CDT, 22 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.
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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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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 4:09 AM CDT	Severe Thunderstorm Warning	DMX	Guthrie	45 min
Jul 28, 5:56 PM CDT	Severe Thunderstorm Warning	DMX	Wapello	44 min

Nearby

Severe Thunderstorm Warnings in Iowa, 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; the sounding from the Mesonet's radiosonde archive.