Alert archive / South Dakota / River Flood Warnings in 2023

River Flood Warning 10, NWS Sioux Falls, SD

April 9, 2023Moody County, South Dakota; Pipestone County, Minnesota

NWS Sioux Falls, SD issued this river flood warning at Apr 9, 2023, 5:34 AM CDT for Moody County, South Dakota; Pipestone County, Minnesota. It was in force for 21 days.

The area

The counties it named.

The facts

Issued: Apr 9, 2023, 5:34 AM CDT (10:34 UTC)
Expired: Apr 30, 2023, 5:34 AM CDT
In force: 21 days
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

Counties Pipestone County, MN, Moody County, SD

The radar

The Sioux Falls radar (KFSD), 53 km from the middle of the area, began a volume at 10:35 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 Flandreau Creek above Flandreau (FCRS2). The gauge peaked at 9.27 ft at Apr 9, 2023, 9:00 AM CDT.

Action stage: 8 ft
Minor stage: 9 ft
Moderate stage: 11 ft
Major stage: 15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06480650, 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 Sioux Falls, SD wrote its last area forecast discussion before this river flood warning went out at Apr 9, 4:19 AM CDT, 1 hour 15 minutes earlier.

Area forecast discussion, Apr 9, 4:19 AM CDT, 1 hour 15 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>

Hazardous weather outlook, Apr 9, 4:44 AM CDT, 50 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 11:23 PM CDT	River Flood Warning	FSD	Minnehaha	21 days
Apr 8, 11:23 PM CDT	River Flood Warning	FSD	Brookings	21 days
Apr 9, 5:34 AM CDT	River Flood Warning	FSD	Lincoln, Union	21 days
Apr 9, 8:53 AM CDT	River Flood Warning	FSD	Minnehaha	8 days
Apr 9, 8:53 AM CDT	River Flood Warning	FSD	Minnehaha	4 days
Apr 9, 8:53 AM CDT	River Flood Warning	FSD	Brookings, Moody	14 days
Apr 9, 8:53 AM CDT	River Flood Warning	FSD	Union	21 days
Apr 8, 11:23 PM CDT	River Flood Warning	FSD	Lyon	5 days

Nearby

River Flood Warnings in South Dakota, 2023 River Flood Warnings in Minnesota, 2023 Every river flood warning in 2023

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.