Alert archive / South Dakota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 266, NWS Sioux Falls, SD

August 6, 2025Aurora County, Douglas County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 6, 2025, 11:18 AM CDT for Aurora County, Douglas County, South Dakota. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 6, 2025, 11:18 AM CDT (16:18 UTC)
Expired: Aug 6, 2025, 12:00 PM CDT
In force: 42 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Aurora County, SD, Douglas County, SD

The radar

The Sioux Falls radar (KFSD), 140 km from the middle of the area, began a volume at 16:17 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.

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 6, 5:26 AM CDT, 5 hours 52 minutes earlier.

Area forecast discussion, Aug 6, 5:26 AM CDT, 5 hours 52 minutes before

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Hazardous weather outlook, Aug 6, 4:19 AM CDT, 6 hours 59 minutes before

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In the hours before

Local storm report, Aug 6, 9:51 AM CDT, 1 hour 27 minutes before

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Local storm report, Aug 6, 10:46 AM CDT, 32 minutes before

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Local storm report, Aug 6, 10:48 AM CDT, 30 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Aug 6, 10:51 AM CDT, 27 minutes before

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      <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.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Aug 6, 10:52 AM CDT, 26 minutes before

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</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.
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Local storm report, Aug 6, 11:02 AM CDT, 16 minutes before

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<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
Aug 5, 9:30 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	45 min
Aug 5, 10:53 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Moody	52 min
Aug 5, 11:20 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Brookings, Kingsbury	40 min
Aug 5, 11:22 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Moody	38 min
Aug 5, 11:40 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury, Miner, Sanborn	50 min
Aug 5, 11:59 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Moody	46 min
Aug 6, 12:30 AM CDT	Flash Flood Warning	FSD	Brookings, Kingsbury, Lake, Moody	3 hr
Aug 6, 10:42 AM CDT	River Flood Warning	FSD	Beadle	46 hr
Aug 6, 6:38 PM CDT	River Flood Warning	FSD	Brookings, Hamlin	21 days

Nearby

Severe Thunderstorm Warnings in South Dakota, 2025 Every severe thunderstorm 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.