This alert expired on 12 March 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 18 recorded within 20 km of this point since 11 March 2026 — one other scored the same.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 11 at 7:36PM EDT until March 11 at 8:15PM EDT by NWS State College PA
An estimated 65,310 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 11, 2026 · score 45 · 6.2 km
- June 11, 2026 · score 32 · 8.5 km
- June 15, 2026 · score 39 · 11.7 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 45 out of 100, at 87 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | high |
| Calamity Score (ours) | 45 / 100 |
| Our confidence | 87% |
| Coordinates | 40.3080, -78.5980 |
| Nearest City | Johnstown (27 km) |
| Population Exposed | 65.3K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-11T23:36:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bedford, PA; Blair, PA; Cambria, PA; Huntingdon, PA; Somerset, PA |
| Headline | Severe Thunderstorm Warning issued March 11 at 7:36PM EDT until March 11 at 8:15PM EDT by NWS State College PA |
| Expires | 2026-03-11T20:15:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 5 ESE Clymer |
| Spc County | Indiana |
| Spc State | PA |
| Spc Comments | Image shared with us on facebook with an estimated measurement. (PBZ) |
| MergedSources | [{"id":"spc_wind_40.20_-78.87_72","source":"spc","severity":"medium","severityValue":45,"timestamp":1773258780000,"latitude":40.2,"longitude":-78.87},{"id":"spc_wind_40.27_-78.46_77","source":"spc","severity":"medium","severityValue":45,"timestamp":1773259980000,"latitude":40.27,"longitude":-78.46},{"id":"spc_wind_40.30_-78.32_79","source":"spc","severity":"medium","severityValue":45,"timestamp":1773260940000,"latitude":40.3,"longitude":-78.32},{"id":"spc_wind_40.32_-78.83_104","source":"spc","severity":"medium","severityValue":45,"timestamp":1773272040000,"latitude":40.32,"longitude":-78.83},{"id":"spc_wind_40.32_-78.83_105","source":"spc","severity":"medium","severityValue":45,"timestamp":1773272220000,"latitude":40.32,"longitude":-78.83},{"id":"spc_hail_40.64_-78.94_109","source":"spc","severity":"high","severityValue":65,"timestamp":1773255900000,"latitude":40.64,"longitude":-78.94}] |
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 45/100, near Johnstown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.