Alert archive / Alabama / Flash Flood Warnings in 1991

Flash Flood Warning 47, NWS Birmingham, AL

December 2, 19914 counties in Alabama

NWS Birmingham, AL issued this flash flood warning at Dec 2, 1991, 7:15 PM CST for 4 counties in Alabama. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Dec 2, 1991, 7:15 PM CST (01:15 UTC)
Expired: Dec 2, 1991, 10:15 PM CST
In force: 3 hr
Issued by: NWS Birmingham, AL
Area: Whole counties

Counties Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.3 hours before the alert went out and 169 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 627 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: -114 m²/s²
0-3 km storm-relative helicity: 281 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 flash flood 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, Dec 2, 3:09 PM CST, 4 hours 6 minutes before

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Special weather statement, Dec 2, 5:25 PM CST, 1 hour 50 minutes before

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<head>
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</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.
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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, Dec 2, 5:46 PM CST, 1 hour 29 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 2, 6:17 PM CST	Severe Thunderstorm Warning	BMX	Fayette	43 min
Dec 2, 6:26 PM CST	Severe Thunderstorm Warning	BMX	Greene	34 min
Dec 2, 6:54 PM CST	Severe Thunderstorm Warning	BMX	Tuscaloosa	66 min

Nearby

Flash Flood Warnings in Alabama, 1991 Every flash flood warning in 1991

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.