Alert archive / Colorado / Winter Weather Advisories in 2021

Winter Weather Advisory 34, NWS Denver/Boulder, CO

December 16, 2021Grand County, Jackson County, Colorado

NWS Denver/Boulder, CO issued this winter weather advisory at Dec 16, 2021, 3:27 AM MST for Grand County, Jackson County, Colorado. It took effect at Dec 16, 2021, 5:00 PM MST. It was in force for 19 hr.

The area

The counties it named.

The facts

Issued
Dec 16, 2021, 3:27 AM MST (10:27 UTC)
In effect from
Dec 16, 2021, 5:00 PM MST
Expired
Dec 17, 2021, 12:00 PM MST
In force
19 hr
Issued by
NWS Denver/Boulder, CO

Counties Grand County, CO, Jackson County, CO

The radar

The Cheyenne radar (KCYS), 147 km from the middle of the area, began a volume at 10:30 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 winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this winter weather advisory went out at Dec 15, 3:24 PM MST, 12 hours 3 minutes earlier.

Area forecast discussion, Dec 15, 3:24 PM MST, 12 hours 3 minutes before
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Hazardous weather outlook, Dec 15, 11:00 AM MST, 16 hours 27 minutes before
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<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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Nearby

Winter Weather Advisories in Colorado, 2021Every winter weather 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.