Alert archive / North Dakota / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 147, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 20, 2025, 7:09 PM MDT for Grant County, Hettinger County, North Dakota. It was in force for 25 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 20, 2025, 7:09 PM MDT (01:09 UTC)
- Expired
- Jul 20, 2025, 7:34 PM MDT
- In force
- 25 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Grant County, ND, Hettinger County, ND
The radar
The Bismarck radar (KBIS), 107 km from the middle of the area, began a volume at 01:11 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 20, 4:09 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 1.2 hours before the alert went out and 267 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.
- Mixed-layer CAPE
- 1882 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1104 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.7
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 6:06 PM MDT | Severe Thunderstorm Warning | BIS | Slope | 54 min |
| Jul 20, 6:10 PM MDT | Severe Thunderstorm Warning | BIS | Hettinger, Stark | 65 min |
| Jul 20, 6:25 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley, Slope | 65 min |
| Jul 20, 6:58 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Hettinger, Slope | 62 min |
| Jul 20, 7:18 PM MDT | Severe Thunderstorm Warning | BIS | Morton | 27 min |
| Jul 20, 7:42 PM MDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 63 min |
| Jul 20, 7:43 PM MDT | Severe Thunderstorm Warning | BIS | Bowman | 62 min |
| Jul 20, 7:53 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 37 min |
| Jul 20, 8:02 PM MDT | Severe Thunderstorm Warning | BIS | Bowman, Slope | 58 min |
| Jul 20, 8:09 PM MDT | Areal Flood Advisory | BIS | Burleigh, Morton | 3 hr |
| Jul 20, 8:28 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 31 min |
| Jul 20, 8:39 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Bowman | 51 min |
| Jul 20, 9:06 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Bowman | 54 min |
| Jul 20, 9:11 PM MDT | Severe Thunderstorm Warning | BIS | Divide | 22 min |
| Jul 20, 9:25 PM MDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, Kidder, Logan | 34 min |
| Jul 20, 10:58 PM MDT | Special Weather Statement | BIS | Logan | 32 min |
| Jul 20, 11:29 PM MDT | Special Weather Statement | BIS | Sioux | 46 min |
| Jul 20, 11:48 PM MDT | Special Weather Statement | BIS | Logan | 27 min |
| Jul 21, 12:13 AM MDT | Special Weather Statement | BIS | LaMoure | 32 min |
| Jul 21, 12:43 AM MDT | Special Weather Statement | BIS | LaMoure | 47 min |
| Jul 21, 1:00 AM MDT | Special Weather Statement | BIS | McIntosh | 30 min |
| Jul 21, 1:12 AM MDT | Special Weather Statement | BIS | LaMoure | 48 min |
| Jul 21, 1:32 AM MDT | Special Weather Statement | BIS | Dickey | 28 min |
| Jul 21, 1:45 AM MDT | Special Weather Statement | BIS | Dickey | 15 min |
| Jul 21, 2:00 AM MDT | Special Weather Statement | BIS | Dickey | 15 min |
| Jul 21, 4:37 AM MDT | Dense Fog Advisory | BIS | Billings, Bottineau, Burke, Divide, Dunn, Golden Valley and 7 more | 6 hr |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2025Every 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.