Alert archive / Indiana / Dense Fog Advisories in 2021

Dense Fog Advisory 9, NWS Northern Indiana

December 9, 202121 counties in Indiana; 8 counties in Ohio; 4 counties in Michigan

NWS Northern Indiana issued this dense fog advisory at Dec 9, 2021, 8:54 PM EST for 21 counties in Indiana; 8 counties in Ohio; 4 counties in Michigan. It took effect at Dec 10, 2021, 4:00 AM EST. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Dec 9, 2021, 8:54 PM EST (01:54 UTC)
In effect from: Dec 10, 2021, 4:00 AM EST
Expired: Dec 10, 2021, 12:00 PM EST
In force: 8 hr
Issued by: NWS Northern Indiana

All 33 counties

Adams County, IN, Allen County, IN, Blackford County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Huntington County, IN, Jay County, IN, LaGrange County, IN, Marshall County, IN, Miami County, IN, Noble County, IN, Pulaski County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, Wells County, IN, White County, IN, Whitley County, IN, Branch County, MI, Cass County, MI, Hillsdale County, MI, Saint Joseph County, MI, Allen County, OH, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 38 km from the middle of the area, began a volume at 01:56 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 Northern Indiana wrote its last area forecast discussion before this dense fog advisory went out at Dec 9, 6:17 PM EST, 2 hours 37 minutes earlier.

Area forecast discussion, Dec 9, 6:17 PM EST, 2 hours 37 minutes before

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Hazardous weather outlook, Dec 9, 2:49 PM EST, 6 hours 5 minutes before

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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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 10, 4:15 AM EST	Gale Warning	IWX		39 hr
Dec 10, 4:15 AM EST	Small Craft Advisory	IWX		25 hr
Dec 10, 12:03 PM EST	Wind Advisory	IWX	Adams, Allen, Blackford, Cass, DeKalb, Elkhart and 15 more	29 hr

Nearby

Dense Fog Advisories in Indiana, 2021 Dense Fog Advisories in Ohio, 2021 Dense Fog Advisories in Michigan, 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.