Alert archive / South Dakota / River Flood Warnings in 2019

River Flood Warning 86, NWS Aberdeen, SD

October 21, 2019Corson County, South Dakota

NWS Aberdeen, SD issued this river flood warning at Oct 21, 2019, 4:09 AM MDT for Corson County, South Dakota. It was in force for 65 hr.

The area

The counties it named.

The facts

Issued: Oct 21, 2019, 4:09 AM MDT (10:09 UTC)
Expired: Oct 23, 2019, 9:04 PM MDT
In force: 65 hr
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Flood severity: Minor

County Corson County, SD

The radar

The Bismarck radar (KBIS), 123 km from the middle of the area, began a volume at 10:11 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 Oak Creek near Wakpala (WKPS2). The gauge peaked at 17.19 ft at Oct 22, 2019, 8:00 AM MDT.

Action stage: 9 ft
Minor stage: 10 ft
Moderate stage: 13 ft
Major stage: 16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06354881, 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 Oct 21, 2:54 AM MDT, 1 hour 15 minutes earlier.

Area forecast discussion, Oct 21, 2:54 AM MDT, 1 hour 15 minutes before

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Hazardous weather outlook, Oct 21, 3:37 AM MDT, 32 minutes before

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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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 Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 21, 2:50 AM MDT	High Wind Warning	ABR	Codington, Day, Deuel, Grant, Hamlin, Marshall and 1 more	22 hr
Oct 21, 2:50 AM MDT	Wind Advisory	ABR	Brown, Buffalo, Clark, Codington, Day, Deuel and 14 more	36 hr

Nearby

River Flood Warnings in South Dakota, 2019 Every river flood warning in 2019

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.