Alert archive / North Dakota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 7, NWS Bismarck, ND

June 15, 2025Bowman County, Slope County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 15, 2025, 11:29 PM MDT for Bowman County, Slope County, North Dakota. It was in force for 61 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 15, 2025, 11:29 PM MDT (05:29 UTC)
Expired: Jun 16, 2025, 12:30 AM MDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Bowman County, ND, Slope County, ND

The radar

The Bismarck radar (KBIS), 216 km from the middle of the area, began a volume at 05:31 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 15, 9:58 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.5 hours before the alert went out and 220 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1725 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1256 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.9

Open this sounding in Storm Lab

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 15, 9:31 PM MDT, 1 hour 58 minutes earlier.

Area forecast discussion, Jun 15, 9:31 PM MDT, 1 hour 58 minutes before

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Hazardous weather outlook, Jun 15, 9:32 PM MDT, 1 hour 57 minutes before

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In the hours before

Local storm report, Jun 15, 7:41 PM MDT, 3 hours 48 minutes before

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Special weather statement, Jun 15, 10:23 PM MDT, 1 hour 6 minutes before

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Special weather statement, Jun 15, 10:29 PM MDT, 1 hour before

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Special weather statement, Jun 15, 11:00 PM MDT, 29 minutes before

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Local storm report, Jun 15, 11:01 PM MDT, 28 minutes before

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Special weather statement, Jun 15, 11:02 PM MDT, 27 minutes before

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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 15, 6:01 PM MDT	Severe Thunderstorm Warning	BIS	Divide	59 min
Jun 15, 6:53 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Divide	67 min
Jun 15, 7:43 PM MDT	Severe Thunderstorm Warning	BIS	Burke	47 min
Jun 15, 10:23 PM MDT	Special Weather Statement	BIS	Williams	37 min
Jun 15, 10:29 PM MDT	Special Weather Statement	BIS	Bowman	31 min
Jun 15, 10:54 PM MDT	Severe Thunderstorm Warning	BIS	McKenzie	66 min
Jun 15, 11:00 PM MDT	Special Weather Statement	BIS	Williams	30 min
Jun 15, 11:02 PM MDT	Special Weather Statement	BIS	Bowman, Slope	28 min
Jun 15, 11:42 PM MDT	Special Weather Statement	BIS	Burke	33 min
Jun 15, 11:57 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Adams, Hettinger	63 min
Jun 16, 12:14 AM MDT	Special Weather Statement	BIS	Burke, McKenzie, Mountrail	31 min
Jun 16, 12:20 AM MDT	Severe Thunderstorm Warning Destructive damage threat	BIS	Adams, Hettinger	40 min
Jun 16, 12:28 AM MDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	32 min
Jun 16, 12:47 AM MDT	Severe Thunderstorm Warning Destructive damage threat	BIS	Grant, Hettinger, Sioux	43 min
Jun 16, 12:56 AM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Bowman, Slope	49 min
Jun 16, 1:18 AM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Grant, Morton, Sioux	57 min
Jun 16, 1:18 AM MDT	Severe Thunderstorm Warning	BIS	Emmons, McIntosh	57 min
Jun 16, 1:25 AM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Grant, Hettinger	50 min
Jun 16, 1:55 AM MDT	High Wind Warning	BIS	Adams, Bowman, Hettinger, Slope	3 hr
Jun 16, 2:03 AM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Emmons, Logan	42 min
Jun 16, 2:18 AM MDT	Special Weather Statement	BIS	Burleigh, Emmons, Morton	27 min
Jun 16, 2:33 AM MDT	Special Weather Statement	BIS	Logan	27 min
Jun 16, 2:36 AM MDT	Dense Fog Advisory	BIS	Dickey, Foster, LaMoure, Stutsman	2 hr
Jun 16, 2:47 AM MDT	Special Weather Statement	BIS	Kidder, Logan	28 min
Jun 16, 3:23 AM MDT	Special Weather Statement	BIS	LaMoure	22 min
Jun 16, 5:09 PM MDT	Special Weather Statement	BIS	McHenry	36 min
Jun 16, 5:41 PM MDT	Severe Thunderstorm Warning	BIS	McHenry, McLean, Pierce, Sheridan	64 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.