Alert archive / South Dakota / River Flood Warnings in 2019

River Flood Warning 72, NWS Aberdeen, SD

August 4, 2019Grant County, South Dakota

NWS Aberdeen, SD issued this river flood warning at Aug 4, 2019, 7:21 AM CDT for Grant County, South Dakota. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Aug 4, 2019, 7:21 AM CDT (12:21 UTC)
Expired: Aug 4, 2019, 7:34 PM CDT
In force: 12 hr
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Flood severity: Minor

County Grant County, SD

The radar

The Aberdeen radar (KABR), 132 km from the middle of the area, began a volume at 12:21 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 near Florence (FLOS2). The gauge peaked at 8.12 ft at Aug 3, 2019, 7:00 AM CDT.

Action stage: 7 ft
Minor stage: 8 ft
Moderate stage: 8.5 ft
Major stage: 9 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06479215, 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 Aug 3, 6:24 PM CDT, 12 hours 57 minutes earlier.

Area forecast discussion, Aug 3, 6:24 PM CDT, 12 hours 57 minutes before

<!doctype html>
<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>

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.