Alert archive / Alabama / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 38, NWS Birmingham, AL

May 3, 1993Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 3, 1993, 10:14 PM CDT for Shelby County, Alabama. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
May 3, 1993, 10:14 PM CDT (03:14 UTC)
Expired
May 3, 1993, 11:00 PM CDT
In force
46 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Shelby County, AL

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 00:00Z, 3.2 hours before the alert went out and 64 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, Centreville/Bibb, AL at 00:00Z on 1993-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1622 joules per kilogram.LCLEL10008507005003002001001 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, Centreville/Bibb, AL at 00:00Z on 1993-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 243 square meters per square second.193958Sfc1 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
1622 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
664 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
243 m²/s²
0-3 km storm-relative helicity
302 m²/s²
Significant tornado parameter
2.1
Supercell composite
10.3

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

Local storm report, May 3, 8:25 PM CDT, 1 hour 49 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
825 PM CDT MON MAY 3 1993

820 PM CDT...3/4 TO ONE INCH SIZE HAIL AT HUEYTOWN ALABAMA IN JEFFERSON
             COUNTY.
Local storm report, May 3, 8:25 PM CDT, 1 hour 49 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
825 PM CDT MON MAY 3 1993

820 PM CDT...3/4 TO ONE INCH SIZE HAIL AT HUEYTOWN ALABAMA IN JEFFERSON
             COUNTY.
Local storm report, May 3, 8:58 PM CDT, 1 hour 16 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
858 PM CDT MON MAY 3 1993

850 PM CDT...GOLFBALL SIZE HAIL REPORTED IN WYLAM...JUST WEST OF BIRMINGHAM
             ...IN JEFFERSON COUNTY.
Local storm report, May 3, 8:58 PM CDT, 1 hour 16 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
858 PM CDT MON MAY 3 1993

850 PM CDT...GOLFBALL SIZE HAIL REPORTED IN WYLAM...JUST WEST OF BIRMINGHAM
             ...IN JEFFERSON COUNTY.
Special weather statement, May 3, 9:43 PM CDT, 31 minutes before
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Special weather statement, May 3, 9:44 PM CDT, 30 minutes before
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  <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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The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 7:13 PM CDTTornado WarningBMXJefferson62 min
May 3, 7:18 PM CDTTornado WarningBMXCullman27 min
May 3, 8:14 PM CDTTornado WarningBMXJefferson61 min
May 3, 8:20 PM CDTSevere Thunderstorm WarningBMXMorgan55 min
May 3, 8:26 PM CDTSevere Thunderstorm WarningBMXTuscaloosa64 min
May 3, 9:02 PM CDTFlash Flood WarningBMXLawrence4 hr
May 3, 9:02 PM CDTFlash Flood WarningBMXMadison4 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 1993Every severe thunderstorm warning in 1993

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.