Alert archive / Alabama / Special Weather Statements in 2018

Special Weather Statement, NWS Birmingham, AL

November 7, 2018Shelby County, Alabama

NWS Birmingham, AL issued this special weather statement at Nov 7, 2018, 12:13 PM CST for Shelby County, Alabama. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Nov 7, 2018, 12:13 PM CST (18:13 UTC)
Expired: Nov 7, 2018, 12:45 PM CST
In force: 32 min
Issued by: NWS Birmingham, AL

County Shelby County, AL

The radar

The Birmingham radar (KBMX), 18 km from the middle of the area, began a volume at 18:13 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, 6.2 hours before the alert went out and 198 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: 1536 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Nov 6, 3:23 PM CST, 20 hours 50 minutes earlier.

Area forecast discussion, Nov 6, 3:23 PM CST, 20 hours 50 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.
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</body>
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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 7, 9:59 AM CST	Special Weather Statement	BMX	Greene	46 min
Nov 7, 10:05 AM CST	Special Weather Statement	BMX	Fayette	40 min
Nov 7, 10:39 AM CST	Special Weather Statement	BMX	Marengo	51 min
Nov 7, 10:46 AM CST	Special Weather Statement	BMX	Tuscaloosa	44 min
Nov 7, 11:32 AM CST	Special Weather Statement	BMX	Shelby	43 min
Nov 7, 11:54 AM CST	Special Weather Statement	BMX	Shelby	36 min
Nov 7, 12:40 PM CST	Special Weather Statement	BMX	Dallas	35 min
Nov 7, 1:34 PM CST	Special Weather Statement	BMX	Clay	26 min
Nov 7, 1:48 PM CST	Special Weather Statement	BMX	Montgomery	42 min
Nov 7, 2:17 PM CST	Special Weather Statement	BMX	Lee, Macon, Tallapoosa	28 min
Nov 7, 2:39 PM CST	Special Weather Statement	BMX	Lee	36 min
Nov 7, 3:03 PM CST	Special Weather Statement	BMX	Russell	27 min

Nearby

Special Weather Statements in Alabama, 2018 Every special weather statement in 2018

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.