Reported by SPC yesterday.
It is the 8th strongest of the 163 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 3 September 2026.
What the source measured
SPC reported: Wind UNK kt near 4 NW Chardon, Geauga, OH. Tree down across road with power issue SR 44 & Clark... and wires down on SR 6 near St Denis Golf Course. (CLE)
An estimated 1,057,080 people live within 50 km of this point.
Nearby, since 17 March 2026
- September 4, 2026 · score 41 · 4.7 km
- June 11, 2026 · score 41 · 5.8 km
- June 11, 2026 · score 46 · 6.6 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 46 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) | 46 / 100 |
| Our confidence | 90% |
| Coordinates | 41.6300, -81.2400 |
| Nearest City | Mentor (9 km) |
| Population Exposed | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T00:14:38.903Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | 4 NW Chardon |
| County | Geauga |
| State | OH |
| Comments | Tree down across road with power issue SR 44 & Clark... and wires down on SR 6 near St Denis Golf Course. (CLE) |
| Iem TypeSummary | C |
| Iem City | 1 NW Willoughby Hills |
| Iem County | Lake |
| Iem State | OH |
| Iem Wfo | CLE |
| Iem Remark | Funnel cloud reported by trained spotter. |
| MergedSources | [{"id":"iem_D_41.520_-81.200_1788474600000","source":"iem","severity":"low","severityValue":25,"timestamp":1788474600000,"latitude":41.52,"longitude":-81.2},{"id":"iem_D_41.630_-81.240_1788475080000","source":"iem","severity":"low","severityValue":25,"timestamp":1788475080000,"latitude":41.63,"longitude":-81.24},{"id":"iem_C_41.590_-81.450_1788473040000","source":"iem","severity":"low","severityValue":25,"timestamp":1788473040000,"latitude":41.59,"longitude":-81.45}] |
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 Mentor?
Calamity.live data shows a weather event with CalamityScore 46/100, near Mentor (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.