Alert archive / North Dakota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 87, NWS Bismarck, ND

June 27, 2026Sioux County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 27, 2026, 1:22 AM CDT for Sioux County, North Dakota. It was in force for 36 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: Jun 27, 2026, 1:22 AM CDT (06:22 UTC)
Expired: Jun 27, 2026, 1:58 AM CDT
In force: 36 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Sioux County, ND

The radar

The Bismarck radar (KBIS), 76 km from the middle of the area, began a volume at 06:26 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 Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 26, 10:01 PM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, Jun 26, 10:01 PM CDT, 3 hours 21 minutes before

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Hazardous weather outlook, Jun 27, 12:48 AM CDT, 34 minutes before

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<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.
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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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The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 27, 4:06 AM CDT	Wind Advisory	BIS	Burleigh, Dickey, Emmons, Foster, Grant, Kidder and 8 more	11 hr
Jun 27, 6:15 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Bowman	60 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2026 Every severe thunderstorm warning in 2026

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.