Reported by SPC today.
No stronger detection stands among the 26 recorded within 20 km of this point since 17 March 2026 — 14 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Wind 58 kt near 2 NNW Shelby, Toole, MT. AWOS station KSBX 2 NNW Shelby. (TFX)
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 16 out of 100, at 70 % 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) | 16 / 100 |
| Our confidence | 70% |
| Coordinates | 48.5400, -111.8700 |
| Nearest City | Great Falls (123 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-03T02:51:58.632Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 58 |
| Location | 2 NNW Shelby |
| County | Toole |
| State | MT |
| Comments | AWOS station KSBX 2 NNW Shelby. (TFX) |
| Iem TypeSummary | G |
| Iem Magnitude | 58 |
| Iem Unit | MPH |
| Iem City | 2 NNW Shelby |
| Iem County | Toole |
| Iem State | MT |
| Iem Wfo | TFX |
| Iem Remark | AWOS station KSBX 2 NNW Shelby. |
| MergedSources | [{"id":"iem_G_48.540_-111.870_1788388500000","source":"iem","severity":"low","severityValue":25,"timestamp":1788388500000,"latitude":48.54,"longitude":-111.87}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.