Alert archive / Wyoming / Winter Storm Warnings in 2009

Winter Storm Warning 33, NWS Riverton, WY

December 12, 20095 counties in Wyoming

NWS Riverton, WY issued this winter storm warning at Dec 12, 2009, 10:07 AM MST for 5 counties in Wyoming. It took effect at Dec 12, 2009, 11:00 AM MST. It was in force for 40 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 12, 2009, 10:07 AM MST (17:07 UTC)
In effect from: Dec 12, 2009, 11:00 AM MST
Expired: Dec 14, 2009, 2:36 AM MST
In force: 40 hr
Issued by: NWS Riverton, WY

Counties Fremont County, WY, Lincoln County, WY, Park County, WY, Sublette County, WY, Teton County, WY

The radar

The Riverton/Lander radar (KRIW), 116 km from the middle of the area, began a volume at 17:13 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 storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Riverton, WY wrote its last area forecast discussion before this winter storm warning went out at Dec 12, 3:38 AM MST, 6 hours 29 minutes earlier.

Area forecast discussion, Dec 12, 3:38 AM MST, 6 hours 29 minutes before

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Hazardous weather outlook, Dec 12, 5:00 AM MST, 5 hours 7 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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The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 12, 10:07 AM MST	Winter Weather Advisory	RIW	Big Horn, Fremont, Johnson, Lincoln, Natrona, Sublette and 2 more	40 hr

Nearby

Winter Storm Warnings in Wyoming, 2009 Every winter storm warning in 2009

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.