Alert archive / South Dakota / River Flood Warnings in 2019

River Flood Warning 175, NWS Sioux Falls, SD

May 20, 2019Minnehaha County, Moody County, South Dakota

NWS Sioux Falls, SD issued this river flood warning at May 20, 2019, 8:50 AM CDT for Minnehaha County, Moody County, South Dakota. It was in force for 14 days.

The area

The counties it named.

The facts

Issued: May 20, 2019, 8:50 AM CDT (13:50 UTC)
Expired: Jun 3, 2019, 4:04 PM CDT
In force: 14 days
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

Counties Minnehaha County, SD, Moody County, SD

The radar

The Sioux Falls radar (KFSD), 29 km from the middle of the area, began a volume at 13:54 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 above Dell Rapids (DRBS2).

Action stage: 1479.5 ft
Minor stage: 1481 ft
Moderate stage: 1484 ft
Major stage: 1486 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record, 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 May 20, 6:14 AM CDT, 2 hours 36 minutes earlier.

Area forecast discussion, May 20, 6:14 AM CDT, 2 hours 36 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, May 20, 3:55 AM CDT, 4 hours 55 minutes before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
355 AM CDT Mon May 20 2019

IAZ001>003-012>014-020>022-031-032-MNZ089-090-098-NEZ013-014-SDZ050-
057>071-210900-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Nobles-Jackson-Rock-Dixon-Dakota-Gregory-
Brule-Aurora-Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-
Hutchinson-Turner-Lincoln-Bon Homme-Yankton-Union-
355 AM CDT Mon May 20 2019

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

.DAY ONE...Today and tonight.

Frost will be possible north of highway 18 early this morning.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Periods of rain with moderate to heavy rainfall are possible next
week, with Tuesday and Thursday looking like the most likely
timeframes.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MNZ071-072-080-081-097-SDZ038>040-052>056-210900-
Lincoln-Lyon-Murray-Cottonwood-Pipestone-Beadle-Kingsbury-Brookings-
Jerauld-Sanborn-Miner-Lake-Moody-
355 AM CDT Mon May 20 2019

This Hazardous Weather Outlook is for southwest Minnesota, central
South Dakota and east central South Dakota.

.DAY ONE...Today and tonight.

Areas of frost will be possible early this morning.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Periods of rain with moderate to heavy rainfall are possible next
week, with Tuesday and Thursday looking like the most likely
timeframes.

.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
May 19, 7:28 PM CDT	River Flood Warning	FSD	Moody	13 days
May 20, 2:58 PM CDT	Wind Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	32 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.