Reported by SPC today.
No stronger detection stands among the 9 recorded within 20 km of this point since 22 April 2026 — one other scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Wind 62 kt near 7 WSW Crow Rock, Garfield, MT. 43G62 Rock Springs N... MT. (GGW)
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 22 out of 100, at 61 % 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 | 61% |
| Coordinates | 46.8900, -106.2100 |
| Nearest City | Billings (215 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-30T18:55:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 62 |
| Location | 7 WSW Crow Rock |
| County | Garfield |
| State | MT |
| Comments | 43G62 Rock Springs N... MT. (GGW) |
| Iem TypeSummary | G |
| Iem Magnitude | 62 |
| Iem Unit | MPH |
| Iem City | 7 WSW Crow Rock |
| Iem County | Garfield |
| Iem State | MT |
| Iem Wfo | GGW |
| Iem Remark | 43G62 Rock Springs N, MT. |
| MergedSources | [{"id":"iem_G_46.890_-106.210_1788116100000","source":"iem","severity":"low","severityValue":25,"timestamp":1788116100000,"latitude":46.89,"longitude":-106.21}] |
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 Billings (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.