This alert expired on 3 September 2026 at 05:30 UTC. It is kept here as a record.
It is the 5th strongest of the 7 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 3 at 12:35AM EDT until September 3 at 1:30AM EDT by NWS State College PA
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 67 % 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) | 16 / 100 |
| Our confidence | 67% |
| Coordinates | 41.3750, -77.6240 |
| Nearest City | Williamsport (54 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-03T04:35:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.cafc86efc395876f72b1b7c7a804165f9af4352a.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cameron, PA; Centre, PA; Clearfield, PA; Clinton, PA; Lycoming, PA; Potter, PA; Sullivan, PA; Tioga, PA |
| Headline | Severe Thunderstorm Warning issued September 3 at 12:35AM EDT until September 3 at 1:30AM EDT by NWS State College PA |
| Expires | 2026-09-03T01:30:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 5 N Denton Hill State P |
| Spc County | Potter |
| Spc State | PA |
| Spc Comments | Tree down partially blocking South Brookland Road. Likely associated with the outflow boundary out ahead of the line of storms. (CTP) |
| MergedSources | [{"id":"spc_wind_41.95_-77.89_240","source":"spc","severity":"medium","severityValue":45,"timestamp":1788397800000,"latitude":41.95,"longitude":-77.89},{"id":"spc_wind_41.83_-77.80_247","source":"spc","severity":"medium","severityValue":45,"timestamp":1788398700000,"latitude":41.83,"longitude":-77.8}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.