Alert archive / Montana / Wind Advisories in 2020

Wind Advisory 25, NWS Billings, MT

December 21, 2020Park County, Stillwater County, Sweet Grass County, Montana

NWS Billings, MT issued this wind advisory at Dec 21, 2020, 2:33 AM MST for Park County, Stillwater County, Sweet Grass County, Montana. It took effect at Dec 21, 2020, 5:00 PM MST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued: Dec 21, 2020, 2:33 AM MST (09:33 UTC)
In effect from: Dec 21, 2020, 5:00 PM MST
Expired: Dec 22, 2020, 9:49 AM MST
In force: 17 hr
Issued by: NWS Billings, MT

Counties Park County, MT, Stillwater County, MT, Sweet Grass County, MT

The radar

The Billings radar (KBLX), 107 km from the middle of the area, began a volume at 09:37 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 wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Billings, MT wrote its last area forecast discussion before this wind advisory went out at Dec 20, 8:25 PM MST, 6 hours 8 minutes earlier.

Area forecast discussion, Dec 20, 8:25 PM MST, 6 hours 8 minutes before

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Hazardous weather outlook, Dec 20, 8:26 PM MST, 6 hours 7 minutes before

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<body>
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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In the hours before

Local storm report, Dec 20, 8:33 PM MST, 6 hours before

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  <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.
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      <p id="message2">
        Please try again in a few minutes.
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      <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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The office that day

Everything else NWS Billings, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 21, 11:00 AM MST	High Wind Watch	BYZ	Big Horn, Carter, Custer, Fallon, Musselshell, Powder River and 3 more	15 hr

Nearby

Wind Advisories in Montana, 2020 Every wind advisory in 2020

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.