Alert archive / North Dakota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 257, NWS Bismarck, ND

August 18, 2025LaMoure County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 18, 2025, 7:17 PM CDT for LaMoure County, North Dakota. It was in force for 43 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 18, 2025, 7:17 PM CDT (00:17 UTC)
Expired: Aug 18, 2025, 8:00 PM CDT
In force: 43 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County LaMoure County, ND

The radar

The Aberdeen radar (KABR), 112 km from the middle of the area, began a volume at 00:17 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 Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 18, 6:23 PM CDT, 54 minutes earlier.

Area forecast discussion, Aug 18, 6:23 PM CDT, 54 minutes before

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Hazardous weather outlook, Aug 18, 6:23 PM CDT, 54 minutes before

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In the hours before

Special weather statement, Aug 18, 5:25 PM CDT, 1 hour 52 minutes before

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Special weather statement, Aug 18, 5:49 PM CDT, 1 hour 28 minutes before

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Special weather statement, Aug 18, 5:55 PM CDT, 1 hour 22 minutes before

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Special weather statement, Aug 18, 6:18 PM CDT, 59 minutes before

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Special weather statement, Aug 18, 6:32 PM CDT, 45 minutes before

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<body>
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      <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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Special weather statement, Aug 18, 6:45 PM CDT, 32 minutes before

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      <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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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 7:01 PM CDT	Areal Flood Advisory	BIS	Stutsman	3 hr
Aug 18, 7:05 PM CDT	Special Weather Statement	BIS	LaMoure	25 min
Aug 18, 7:09 PM CDT	Special Weather Statement	BIS	Foster	36 min
Aug 19, 3:43 AM CDT	Heat Advisory	BIS	Adams, Billings, Bowman, Burke, Divide, Dunn and 11 more	39 hr
Aug 19, 4:32 AM CDT	Special Weather Statement	BIS	Grant	43 min
Aug 19, 4:39 AM CDT	Dense Fog Advisory	BIS	Bottineau, Burke, Burleigh, Foster, Kidder, McHenry and 9 more	6 hr

Nearby

Severe Thunderstorm Warnings in North 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.