Alert archive / Alabama / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 321, NWS Birmingham, AL

June 3, 1999Chambers County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 3, 1999, 4:01 PM CDT for Chambers County, Alabama. It was in force for 34 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: Jun 3, 1999, 4:01 PM CDT (21:01 UTC)
Expired: Jun 3, 1999, 4:35 PM CDT
In force: 34 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Chambers County, AL

The radar

The Maxwell AFB radar (KMXX), 56 km from the middle of the area, began a volume at 21:02 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.0 hours before the alert went out and 97 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: 815 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1010 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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, Jun 3, 3:38 PM CDT, 23 minutes before

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Local storm report, Jun 3, 3:38 PM CDT, 23 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
Jun 3, 1:16 PM CDT	Severe Thunderstorm Warning	BMX	Limestone	34 min
Jun 3, 1:24 PM CDT	Severe Thunderstorm Warning	BMX	Madison	51 min
Jun 3, 1:36 PM CDT	Severe Thunderstorm Warning	BMX	Cleburne	34 min
Jun 3, 2:11 PM CDT	Severe Thunderstorm Warning	BMX	Cullman	34 min
Jun 3, 2:18 PM CDT	Severe Thunderstorm Warning	BMX	Blount	32 min
Jun 3, 2:59 PM CDT	Severe Thunderstorm Warning	BMX	Coosa, Tallapoosa	51 min
Jun 3, 3:22 PM CDT	Severe Thunderstorm Warning	BMX	Cullman	33 min
Jun 3, 3:51 PM CDT	Severe Thunderstorm Warning	BMX	Cullman	34 min
Jun 3, 4:40 PM CDT	Severe Thunderstorm Warning	BMX	Perry	35 min
Jun 3, 4:53 PM CDT	Severe Thunderstorm Warning	BMX	Dallas	32 min
Jun 3, 5:33 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	32 min
Jun 3, 6:16 PM CDT	Severe Thunderstorm Warning	BMX	Quitman, Stewart	34 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1999 Every severe thunderstorm warning in 1999

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.