Alert archive / Minnesota / River Flood Warnings in 2023

River Flood Warning 29, NWS Sioux Falls, SD

April 12, 2023Lyon County, Minnesota

NWS Sioux Falls, SD issued this river flood warning at Apr 12, 2023, 5:20 AM CDT for Lyon County, Minnesota. It was in force for 49 hr.

The area

The counties it named.

The facts

Issued: Apr 12, 2023, 5:20 AM CDT (10:20 UTC)
Expired: Apr 14, 2023, 6:30 AM CDT
In force: 49 hr
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

County Lyon County, MN

The radar

The Sioux Falls radar (KFSD), 116 km from the middle of the area, began a volume at 10:23 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 Redwood River at Russell (RUSM5).

Action stage: 12 ft
Minor stage: 14 ft
Moderate stage: 17 ft
Major stage: 20 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05314973, 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 12, 3:07 AM CDT, 2 hours 13 minutes earlier.

Area forecast discussion, Apr 12, 3:07 AM CDT, 2 hours 13 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 12, 4:24 AM CDT, 56 minutes before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
424 AM CDT Wed Apr 12 2023

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-130930-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory-
Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-
McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-
Yankton-Union-
424 AM CDT Wed Apr 12 2023

This Hazardous Weather Outlook is for portions of northwest Iowa,
west central Iowa, southwest Minnesota, northeast Nebraska,
central South Dakota, east central South Dakota, south central
South Dakota, and southeast South Dakota.

.DAY ONE...Today and Tonight

Enhanced to critical fire weather conditions are expected today
across portions of far southeast South Dakota, northwest Iowa, and
far southern Minnesota. Use extreme caution with any activity that
may result in an unexpected fire.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Enhanced to critical fire weather conditions are again possible on
Thursday before cooler temperatures and precipitation chances
return Friday.

Minor to localized moderate river flooding will continue through mid
to late week, especially along the Big Sioux and Rock Rivers, and
their tributary creeks. Rises are expected to begin on the James
River late week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 11:11 PM CDT	River Flood Warning	FSD	Beadle	81 days
Apr 12, 3:05 AM CDT	Fire Weather Watch	FSD	Bon Homme, Clay, Hutchinson, Lincoln, McCook, Minnehaha and 3 more	12 hr
Apr 12, 3:19 AM CDT	River Flood Warning	FSD	Union	21 days
Apr 12, 3:16 PM CDT	Red Flag Warning	FSD	Bon Homme, Charles Mix, Clay, Davison, Douglas, Gregory and 10 more	29 hr
Apr 12, 2:23 PM CDT	River Flood Warning	FSD	Cottonwood, Murray	5 days

Nearby

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.