Reported by SPC today.
It is the 20th strongest of the 57 detections recorded within 20 km of this point since 8 March 2026. The last comparable one was on 28 August 2026.
What the source measured
SPC reported: Wind 67 kt near 1 ESE Malmstrom Afb, Cascade, MT. AWOS station KGFA Malmstrom AFB. (TFX)
An estimated 59,638 people live within 50 km of this point.
Nearby, since 8 March 2026
- August 28, 2026 · score 39 · 12.1 km
- September 3, 2026 · score 45 · 16.1 km
- August 27, 2026 · score 39 · 17.8 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 32 out of 100, at 90 % 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 | 90% |
| Coordinates | 47.5000, -111.1700 |
| Nearest City | Great Falls (10 km) |
| Population Exposed | 59.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T21:41:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 67 |
| Location | 1 ESE Malmstrom Afb |
| County | Cascade |
| State | MT |
| Comments | AWOS station KGFA Malmstrom AFB. (TFX) |
| Iem TypeSummary | G |
| Iem Magnitude | 67 |
| Iem Unit | MPH |
| Iem City | 1 ESE Malmstrom Afb |
| Iem County | Cascade |
| Iem State | MT |
| Iem Wfo | TFX |
| Iem Remark | AWOS station KGFA Malmstrom AFB. |
| MergedSources | [{"id":"iem_G_47.500_-111.170_1788385260000","source":"iem","severity":"low","severityValue":25,"timestamp":1788385260000,"latitude":47.5,"longitude":-111.17}] |
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.