Reported by SPC today.
It is the 6th strongest of the 19 detections recorded within 20 km of this point since 7 April 2026. The last comparable one was on 31 July 2026.
What the source measured
SPC reported: Wind 58 kt near 4 NNW Opportunity, Deer Lodge, MT. Anaconda Bowman Field Airport AWOS K3U3 reported southwest wind sustained at 40 mph with gusts to 58 mph. At 1331 it reported a sustained wind of 44 mph. So far there h (MSO)
An estimated 34,190 people live within 50 km of this point.
Nearby, since 7 April 2026
- September 2, 2026 · score 40 · 7.0 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 28 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) | 28 / 100 |
| Our confidence | 90% |
| Coordinates | 46.1500, -112.8700 |
| Nearest City | Butte (31 km) |
| Population Exposed | 34.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T19:29:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 58 |
| Location | 4 NNW Opportunity |
| County | Deer Lodge |
| State | MT |
| Comments | Anaconda Bowman Field Airport AWOS K3U3 reported southwest wind sustained at 40 mph with gusts to 58 mph. At 1331 it reported a sustained wind of 44 mph. So far there h (MSO) |
| Iem TypeSummary | G |
| Iem Magnitude | 58 |
| Iem Unit | MPH |
| Iem City | 4 NNW Opportunity |
| Iem County | Deer Lodge |
| Iem State | MT |
| Iem Wfo | MSO |
| Iem Remark | Anaconda Bowman Field Airport AWOS K3U3 reported southwest wind sustained at 40 mph with gusts to 58 mph. At 1331 it reported a sustained wind of 44 mph. So far there have been power outages reported |
| MergedSources | [{"id":"iem_G_46.150_-112.870_1788377340000","source":"iem","severity":"low","severityValue":25,"timestamp":1788377340000,"latitude":46.15,"longitude":-112.87}] |
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 28/100 (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.