Reported by SPC today.
No stronger detection stands among the 74 recorded within 20 km of this point since 15 March 2026 — 6 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Wind 68 kt near Rochester, Olmsted, MN. AWOS station K9MN Mayo Helipad. (ARX)
An estimated 112,225 people live within 50 km of this point.
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 37 out of 100, at 79 % 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) | 37 / 100 |
| Our confidence | 79% |
| Coordinates | 44.0200, -92.4800 |
| Nearest City | Rochester (1 km) |
| Population Exposed | 112.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T06:35:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 68 |
| Location | Rochester |
| County | Olmsted |
| State | MN |
| Comments | AWOS station K9MN Mayo Helipad. (ARX) |
| Iem TypeSummary | G |
| Iem Magnitude | 68 |
| Iem Unit | MPH |
| Iem City | Rochester |
| Iem County | Olmsted |
| Iem State | MN |
| Iem Wfo | ARX |
| Iem Remark | AWOS station K9MN Mayo Helipad. |
| MergedSources | [{"id":"iem_G_44.020_-92.480_1788330900000","source":"iem","severity":"low","severityValue":25,"timestamp":1788330900000,"latitude":44.02,"longitude":-92.48}] |
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 Rochester?
Calamity.live data shows a weather event with CalamityScore 37/100, near Rochester (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.