Reported by SPC today.
It is the 32nd strongest of the 59 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 4 September 2026.
What the source measured
SPC reported: Wind UNK kt near 2 E Mason, Warren, OH. Large tree down in the 4000 block of Cox-Smith Road in Mason. Time estimated from Radar. (ILN)
An estimated 1,064,211 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 5, 2026 · score 46 · 0.0 km
- September 4, 2026 · score 46 · 0.0 km
- May 28, 2026 · score 52 · 6.3 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 46 out of 100, at 85 % 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 | 85% |
| Coordinates | 39.3600, -84.2700 |
| Nearest City | Mason (3 km) |
| Population Exposed | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-05T01:20:51.973Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | 2 E Mason |
| County | Warren |
| State | OH |
| Comments | Large tree down in the 4000 block of Cox-Smith Road in Mason. Time estimated from Radar. (ILN) |
| Iem TypeSummary | D |
| Iem City | 2 E Mason |
| Iem County | Warren |
| Iem State | OH |
| Iem Wfo | ILN |
| Iem Remark | Large tree down in the 4000 block of Cox-Smith Road in Mason. Time estimated from Radar. |
| MergedSources | [{"id":"iem_G_39.040_-84.670_1788557100000","source":"iem","severity":"low","severityValue":25,"timestamp":1788557100000,"latitude":39.04,"longitude":-84.67},{"id":"iem_G_39.360_-84.520_1788555060000","source":"iem","severity":"low","severityValue":25,"timestamp":1788555060000,"latitude":39.36,"longitude":-84.52},{"id":"iem_D_39.360_-84.270_1788553080000","source":"iem","severity":"low","severityValue":25,"timestamp":1788553080000,"latitude":39.36,"longitude":-84.27}] |
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 Mason?
Calamity.live data shows a weather event with CalamityScore 46/100, near Mason (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.