Alert archive / South Dakota / River Flood Warnings in 2025

River Flood Warning 13, NWS Aberdeen, SD

June 29, 2025Hamlin County, South Dakota

NWS Aberdeen, SD issued this river flood warning at Jun 29, 2025, 3:18 AM CDT for Hamlin County, South Dakota. It was in force for 43 hr.

The area

The counties it named.

The facts

Issued: Jun 29, 2025, 3:18 AM CDT (08:18 UTC)
Expired: Jun 30, 2025, 10:26 PM CDT
In force: 43 hr
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Flood severity: Minor

County Hamlin County, SD

The radar

The Sioux Falls radar (KFSD), 126 km from the middle of the area, began a volume at 08:18 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 Castlewood (CSWS2).

Action stage: 8 ft
Minor stage: 9 ft
Moderate stage: 11 ft
Major stage: 16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06479525, 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 Jun 29, 12:50 AM CDT, 2 hours 28 minutes earlier.

Area forecast discussion, Jun 29, 12:50 AM CDT, 2 hours 28 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, Jun 28, 6:42 AM CDT, 20 hours 36 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Aberdeen SD
642 AM CDT Sat Jun 28 2025

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-291145-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Roberts-
Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-Codington-Grant-
Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
642 AM CDT Sat Jun 28 2025 /542 AM MDT Sat Jun 28 2025/

This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota, north central South Dakota and northeast
South Dakota.

.DAY ONE...Today and tonight.

There is a slight risk (level 2 of 5) for severe storms east of a
line from Pierre to Aberdeen with storms expected to develop along a
stalled boundary in central and eastern South Dakota later this
afternoon. Storms come with the risk for large hail and damaging
winds. We cannot rule out a tornado or two in far eastern South
Dakota and western Minnesota.

Another round of storms will move into central South Dakota from the
west during the early morning hours Sunday. The risk for widespread
severe weather with this cluster of storms is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested. Weather spotters are encouraged
to submit reports to the National Weather Service in Aberdeen. The
public can submit reports on our web page, Facebook page, or our X
feed.

TMT

In the hours before

Local storm report, Jun 28, 10:15 PM CDT, 5 hours 3 minutes before

Preliminary Local Storm Report
National Weather Service Aberdeen SD
1015 PM CDT Sat Jun 28 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1013 PM     Funnel Cloud     3 NE Astoria            44.59N 96.50W
06/28/2025                   Deuel              SD   Trained Spotter

            Spotter reported a possible rain-wrapped
            tornado while heading towards Brandt.

&&

NV

Local storm report, Jun 28, 10:18 PM CDT, 5 hours before

Preliminary Local Storm Report
National Weather Service Aberdeen SD
1018 PM CDT Sat Jun 28 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1016 PM     Tornado          1 E Toronto             44.57N 96.62W
06/28/2025                   Deuel              SD   Law Enforcement

            state radio report of tornado 1 mile east of
            Toronto.

&&

NV

Local storm report, Jun 28, 10:19 PM CDT, 4 hours 59 minutes before

Preliminary Local Storm Report
National Weather Service Aberdeen SD
1019 PM CDT Sat Jun 28 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1018 PM     Tornado          1 N Toronto             44.59N 96.64W
06/28/2025                   Deuel              SD   Law Enforcement

            state radio report of a different tornado 1
            mile north of Toronto.

&&

NV

Local storm report, Jun 28, 10:55 PM CDT, 4 hours 23 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>

Local storm report, Jun 28, 10:58 PM CDT, 4 hours 20 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>

Local storm report, Jun 28, 11:48 PM CDT, 3 hours 30 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 Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 28, 7:08 PM CDT	Tornado Warning Tornado observed	ABR	Deuel	37 min
Jun 28, 7:46 PM CDT	Flash Flood Warning	ABR	Deuel	6 hr
Jun 28, 8:02 PM CDT	Severe Thunderstorm Warning	ABR	Deuel	28 min
Jun 28, 8:05 PM CDT	Tornado Warning	ABR	Deuel	40 min
Jun 28, 8:45 PM CDT	Severe Thunderstorm Warning	ABR	Deuel, Grant	45 min
Jun 28, 8:59 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	61 min
Jun 28, 9:10 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	21 min
Jun 28, 9:14 PM CDT	Tornado Warning	ABR	Codington, Deuel, Hamlin	26 min
Jun 28, 9:43 PM CDT	Tornado Warning	ABR	Deuel, Hamlin	47 min
Jun 28, 9:52 PM CDT	Tornado Warning	ABR	Deuel	38 min
Jun 28, 10:24 PM CDT	Flash Flood Warning	ABR	Deuel, Hamlin	6 hr
Jun 28, 10:29 PM CDT	Tornado Warning	ABR	Deuel, Hamlin	46 min
Jun 28, 11:38 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	35 min
Jun 29, 1:39 AM CDT	Areal Flood Warning	ABR	Deuel	17 hr
Jun 29, 3:55 AM CDT	Special Weather Statement	ABR	Dewey, Potter, Sully	35 min
Jun 29, 4:08 AM CDT	Areal Flood Warning	ABR	Deuel, Hamlin	15 hr
Jun 29, 4:37 AM CDT	Special Weather Statement	ABR	Hughes, Sully	38 min
Jun 29, 5:00 AM CDT	Special Weather Statement	ABR	Hughes, Hyde	45 min
Jun 29, 5:20 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Sully	55 min
Jun 29, 5:54 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Hand	51 min

Nearby

River Flood Warnings in South Dakota, 2025 Every river flood warning in 2025

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.