Alert archive / South Dakota / River Flood Warnings in 2011

River Flood Warning 15, NWS Aberdeen, SD

March 25, 2011Codington County, South Dakota

NWS Aberdeen, SD issued this river flood warning at Mar 25, 2011, 9:21 AM CDT for Codington County, South Dakota. It was in force for 43 hr.

The area

The counties it named.

The facts

Issued: Mar 25, 2011, 9:21 AM CDT (14:21 UTC)
Expired: Mar 27, 2011, 4:00 AM CDT
In force: 43 hr
Issued by: NWS Aberdeen, SD
Flood severity: Minor

County Codington County, SD

The radar

The Aberdeen radar (KABR), 110 km from the middle of the area, began a volume at 14:24 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.

The river

Written for the forecast point Big Sioux River at Watertown Sioux Conifer Road (WBSS2).

Action stage: 8 ft
Minor stage: 9 ft
Moderate stage: 10 ft
Major stage: 12 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06479500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Aberdeen, SD wrote its last area forecast discussion before this river flood warning went out at Mar 25, 3:32 AM CDT, 5 hours 49 minutes earlier.

Area forecast discussion, Mar 25, 3:32 AM CDT, 5 hours 49 minutes before

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Hazardous weather outlook, Mar 25, 4:03 AM CDT, 5 hours 18 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 24, 11:36 PM CDT	Areal Flood Warning	ABR	Brown	48 hr
Mar 25, 1:46 PM CDT	Winter Weather Advisory	ABR	Jones, Lyman, Stanley	29 hr

Nearby

River Flood Warnings in South Dakota, 2011 Every river 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; the gauge from the NWS water service and the USGS.