Reported by SPC today.
It is the 25th strongest of the 159 detections recorded within 20 km of this point since 8 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Wind 60 kt near Ulm, Cascade, MT. In addition... sustained winds of 40-50 mph unknown time frame for sustained winds. (TFX)
An estimated 59,638 people live within 50 km of this point.
Nearby, since 8 March 2026
- September 3, 2026 · score 45 · 10.7 km
- July 18, 2026 · score 39 · 13.2 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 32 out of 100, at 71 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 32 / 100 |
| Our confidence | 71% |
| Coordinates | 47.4300, -111.5100 |
| Nearest City | Great Falls (18 km) |
| Population Exposed | 59.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T12:07:31.724Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 60 |
| Location | Ulm |
| County | Cascade |
| State | MT |
| Comments | In addition... sustained winds of 40-50 mph unknown time frame for sustained winds. (TFX) |
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 8 March 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.
Want to know when something happens near Great Falls?
Calamity.live data shows a weather event with CalamityScore 32/100, near Great Falls (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.