Reported by SPC today.
It is the 2nd strongest of the 14 detections recorded within 20 km of this point since 28 June 2026. The last comparable one was on 30 August 2026.
What the source measured
SPC reported: Wind 62 kt near 1 ESE Lark, Grant, ND. NDAWN station Carson 9ENE. Report at 10 meters... 46 MPH reported at the surface. (BIS)
Nearby, since 28 June 2026
- August 30, 2026 · score 22 · 16.8 km
How we know
Confirmed by 4 independent sources, including SPC.
Our own score for this event is 22 out of 100, at 66 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 66% |
| Coordinates | 46.4400, -101.3700 |
| Nearest City | Mandan (57 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-31T01:23:29.963Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 62 |
| Location | 1 ESE Lark |
| County | Grant |
| State | ND |
| Comments | NDAWN station Carson 9ENE. Report at 10 meters... 46 MPH reported at the surface. (BIS) |
| Iem TypeSummary | G |
| Iem Magnitude | 65 |
| Iem Unit | MPH |
| Iem City | 8 N Selfridge |
| Iem County | Sioux |
| Iem State | ND |
| Iem Wfo | BIS |
| Iem Remark | Mesonet station TTKN8 Tatanka Prairie. |
| MergedSources | [{"id":"iem_G_46.440_-101.370_1788133680000","source":"iem","severity":"low","severityValue":25,"timestamp":1788133680000,"latitude":46.44,"longitude":-101.37},{"id":"iem_G_46.500_-101.990_1788131760000","source":"iem","severity":"low","severityValue":25,"timestamp":1788131760000,"latitude":46.5,"longitude":-101.99},{"id":"iem_G_46.160_-100.900_1788135900000","source":"iem","severity":"low","severityValue":25,"timestamp":1788135900000,"latitude":46.16,"longitude":-100.9}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 22/100, near Mandan (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.