Alert archive / Wyoming / Areal Flood Warnings in 2011

Areal Flood Warning 2, NWS Riverton, WY

May 22, 2011Johnson County, Wyoming

NWS Riverton, WY issued this areal flood warning at May 22, 2011, 3:13 PM MDT for Johnson County, Wyoming. It was in force for 13 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: May 22, 2011, 3:13 PM MDT (21:13 UTC)
Expired: May 23, 2011, 4:16 AM MDT
In force: 13 hr
Issued by: NWS Riverton, WY
Area: Storm-based polygon
Flood severity: None

County Johnson County, WY

The radar

The Riverton/Lander radar (KRIW), 187 km from the middle of the area, began a volume at 21:15 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 areal flood 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 areal flood warning went out at May 22, 3:05 PM MDT, 8 minutes earlier.

Area forecast discussion, May 22, 3:05 PM MDT, 8 minutes before

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Hazardous weather outlook, May 22, 6:38 AM MDT, 8 hours 35 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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    </section>
  </main>
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</body>
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The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 9:07 AM MDT	Areal Flood Advisory	RIW	Johnson	6 hr
May 22, 11:34 AM MDT	Flash Flood Warning	RIW	Johnson	6 hr
May 22, 1:45 PM MDT	Areal Flood Advisory	RIW	Hot Springs	6 hr
May 22, 2:22 PM MDT	Flash Flood Watch	RIW	Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 5 more	64 hr
May 22, 2:37 PM MDT	Areal Flood Advisory	RIW	Johnson	18 hr
May 22, 3:26 PM MDT	Special Weather Statement	RIW		49 min
May 22, 3:35 PM MDT	Special Weather Statement	RIW		40 min

Nearby

Areal Flood Warnings in Wyoming, 2011 Every areal flood warning in 2011

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.