Alert archive / North Dakota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 201, NWS Bismarck, ND

July 28, 20254 counties in North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 28, 2025, 9:59 AM CDT for 4 counties in 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: Jul 28, 2025, 9:59 AM CDT (14:59 UTC)
Expired: Jul 28, 2025, 11:00 AM CDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Burleigh County, ND, Grant County, ND, Morton County, ND, Sioux County, ND

The radar

The Bismarck radar (KBIS), 37 km from the middle of the area, began a volume at 15:00 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
Jul 28, 8:31 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 3.0 hours before the alert went out and 278 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: 816 J/kg
Mixed-layer CIN: -380 J/kg
Mixed-layer LCL: 1166 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 5:42 AM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Billings, Golden Valley, McKenzie	63 min
Jul 28, 6:34 AM CDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley, McKenzie	56 min
Jul 28, 7:23 AM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Billings, Dunn, Golden Valley, McKenzie, Stark	67 min
Jul 28, 8:02 AM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Dunn, Stark	73 min
Jul 28, 8:56 AM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Dunn, Grant, Mercer, Morton, Oliver, Stark	64 min
Jul 28, 10:57 AM CDT	Severe Thunderstorm Warning	BIS	Billings, Bowman, Golden Valley, Slope	63 min
Jul 28, 10:58 AM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Emmons, Morton	47 min
Jul 28, 12:16 PM CDT	Special Weather Statement	BIS	Logan	29 min
Jul 28, 12:22 PM CDT	Special Weather Statement	BIS	Slope	38 min
Jul 28, 1:16 PM CDT	Special Weather Statement	BIS	Hettinger	29 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.