Alert archive / Alabama / Dense Fog Advisories in 2021

Dense Fog Advisory 22, NWS Birmingham, AL

December 9, 202125 counties in Alabama

NWS Birmingham, AL issued this dense fog advisory at Dec 9, 2021, 1:33 AM CST for 25 counties in Alabama. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Dec 9, 2021, 1:33 AM CST (07:33 UTC)
Expired: Dec 9, 2021, 9:00 AM CST
In force: 7 hr
Issued by: NWS Birmingham, AL

All 25 counties

Autauga County, AL, Barbour County, AL, Bibb County, AL, Bullock County, AL, Chambers County, AL, Chilton County, AL, Clay County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Shelby County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL

The radar

The Maxwell AFB radar (KMXX), 59 km from the middle of the area, began a volume at 07:32 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.

What forecasters said that day

The local office's own words before this dense fog advisory 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 dense fog advisory went out at Dec 8, 11:00 PM CST, 2 hours 33 minutes earlier.

Area forecast discussion, Dec 8, 11:00 PM CST, 2 hours 33 minutes before

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Hazardous weather outlook, Dec 9, 12:33 AM CST, 1 hour before

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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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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.
      </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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Nearby

Dense Fog Advisories in Alabama, 2021 Every dense fog advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.