Reported by SPC today.
It is the 30th strongest of the 65 detections recorded within 20 km of this point since 13 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
SPC reported: Wind UNK kt near Rochester, Oakland, MI. Multiple downed trees and wires around Rochester. (DTX)
An estimated 2,811,429 people live within 50 km of this point.
Nearby, since 13 March 2026
- May 19, 2026 · score 52 · 5.8 km
- September 3, 2026 · score 46 · 12.5 km
- May 18, 2026 · score 52 · 12.7 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 46 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) | 46 / 100 |
| Our confidence | 79% |
| Coordinates | 42.6900, -83.1200 |
| Nearest City | Rochester Hills (4 km) |
| Population Exposed | 2.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T15:27:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | Rochester |
| County | Oakland |
| State | MI |
| Comments | Multiple downed trees and wires around Rochester. (DTX) |
| Iem TypeSummary | R |
| Iem Magnitude | 1.44 |
| Iem Unit | Inch |
| Iem City | 2 NE Birmingham |
| Iem County | Oakland |
| Iem State | MI |
| Iem Wfo | DTX |
| Iem Remark | Cocorahs station MI-OK-190 Troy 3.0 WSW. The period of the Rain event was 24 hours. |
| MergedSources | [{"id":"iem_D_42.690_-83.120_1788449220000","source":"iem","severity":"low","severityValue":25,"timestamp":1788449220000,"latitude":42.69,"longitude":-83.12},{"id":"iem_R_42.580_-83.140_1788432540000","source":"iem","severity":"low","severityValue":25,"timestamp":1788432540000,"latitude":42.58,"longitude":-83.14},{"id":"iem_R_42.520_-83.220_1788436800000","source":"iem","severity":"low","severityValue":25,"timestamp":1788436800000,"latitude":42.52,"longitude":-83.22},{"id":"iem_R_42.500_-83.050_1788434100000","source":"iem","severity":"low","severityValue":25,"timestamp":1788434100000,"latitude":42.5,"longitude":-83.05},{"id":"iem_R_42.360_-82.930_1788433200000","source":"iem","severity":"low","severityValue":25,"timestamp":1788433200000,"latitude":42.36,"longitude":-82.93},{"id":"iem_R_42.580_-83.250_1788433200000","source":"iem","severity":"low","severityValue":25,"timestamp":1788433200000,"latitude":42.58,"longitude":-83.25},{"id":"iem_R_42.450_-82.960_1788432300000","source":"iem","severity":"low","severityValue":25,"timestamp":1788432300000,"latitude":42.45,"longitude":-82.96},{"id":"iem_R_42.530_-83.150_1788431700000","source":"iem","severity":"low","severityValue":25,"timestamp":1788431700000,"latitude":42.53,"longitude":-83.15},{"id":"iem_R_42.560_-83.200_1788433200000","source":"iem","severity":"low","severityValue":25,"timestamp":1788433200000,"latitude":42.56,"longitude":-83.2}] |
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 Hills?
Calamity.live data shows a weather event with CalamityScore 46/100, near Rochester Hills (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.