Alert archive / Indiana / Dense Fog Advisories in 2021

Dense Fog Advisory 6, NWS Indianapolis, IN

December 10, 202124 counties in Indiana

NWS Indianapolis, IN issued this dense fog advisory at Dec 10, 2021, 3:43 AM EST for 24 counties in Indiana. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Dec 10, 2021, 3:43 AM EST (08:43 UTC)
Expired: Dec 10, 2021, 12:00 PM EST
In force: 8 hr
Issued by: NWS Indianapolis, IN

All 24 counties

Boone County, IN, Carroll County, IN, Clay County, IN, Clinton County, IN, Delaware County, IN, Fountain County, IN, Greene County, IN, Hamilton County, IN, Hendricks County, IN, Howard County, IN, Knox County, IN, Madison County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN

The radar

The Indianapolis radar (KIND), 40 km from the middle of the area, began a volume at 08:47 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 Indianapolis, IN wrote its last area forecast discussion before this dense fog advisory went out at Dec 10, 3:22 AM EST, 21 minutes earlier.

Area forecast discussion, Dec 10, 3:22 AM EST, 21 minutes before

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In the hours before

Special weather statement, Dec 9, 10:30 PM EST, 5 hours 13 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 Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 10, 2:02 PM EST	Wind Advisory	IND	Bartholomew, Boone, Brown, Carroll, Clay, Clinton and 27 more	27 hr

Nearby

Dense Fog Advisories in Indiana, 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.