Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 223, NWS Birmingham, AL

May 30, 2001Sumter County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 30, 2001, 4:59 PM CDT for Sumter County, Alabama. It was in force for 61 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: May 30, 2001, 4:59 PM CDT (21:59 UTC)
Expired: May 30, 2001, 6:00 PM CDT
In force: 61 min
Issued by: NWS Birmingham, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Sumter County, AL

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.0 hours before the alert went out and 179 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: 334 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 819 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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 Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 30, 3:15 PM CDT, 1 hour 44 minutes earlier.

Area forecast discussion, May 30, 3:15 PM CDT, 1 hour 44 minutes before

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In the hours before

Special weather statement, May 30, 12:00 PM CDT, 4 hours 59 minutes before

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  <meta charset="utf-8">
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  <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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Nearby

Severe Thunderstorm Warnings in Alabama, 2001 Every severe thunderstorm warning in 2001

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.