Reported by SPC 171 days ago.
It is the 4th strongest of the 21 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 11 March 2026. 2 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Wind UNK kt near 2 SSW Claysburg, Blair, PA. Tree and wires down on Quarry Road... blocking both lanes of the roadway. (CTP)
An estimated 65,310 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 11, 2026 · score 45 · 7.1 km
- June 15, 2026 · score 39 · 7.3 km
- June 11, 2026 · score 32 · 9.0 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 72 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 72% |
| Coordinates | 40.2700, -78.4600 |
| Nearest City | Altoona (28 km) |
| Population Exposed | 65.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T12:10:42.613Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | 2 SSW Claysburg |
| County | Blair |
| State | PA |
| Comments | Tree and wires down on Quarry Road... blocking both lanes of the roadway. (CTP) |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 39/100, near Altoona (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.