Alert archive / Wyoming / Freeze Warnings in 2009

Freeze Warning 4, NWS Riverton, WY

September 21, 20098 counties in Wyoming

NWS Riverton, WY issued this freeze warning at Sep 21, 2009, 2:53 PM MDT for 8 counties in Wyoming. It took effect at Sep 22, 2009, 12:00 AM MDT. It was in force for 9 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: Sep 21, 2009, 2:53 PM MDT (20:53 UTC)
In effect from: Sep 22, 2009, 12:00 AM MDT
Expired: Sep 22, 2009, 9:00 AM MDT
In force: 9 hr
Issued by: NWS Riverton, WY

Counties Big Horn County, WY, Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Natrona County, WY, Park County, WY, Sweetwater County, WY, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 63 km from the middle of the area, began a volume at 20:53 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 freeze 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 freeze warning went out at Sep 21, 2:44 PM MDT, 9 minutes earlier.

Area forecast discussion, Sep 21, 2:44 PM MDT, 9 minutes before

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Hazardous weather outlook, Sep 21, 9:00 AM MDT, 5 hours 53 minutes before

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<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
Sep 20, 6:29 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	46 min
Sep 20, 9:40 PM MDT	Freeze Watch	RIW	Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 2 more	17 hr

Nearby

Freeze Warnings in Wyoming, 2009 Every freeze 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.