This alert expired on 6 June 2026 at 21:00 UTC. It is kept here as a record.
It is the 5th strongest of the 33 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 6 at 3:42PM EDT until June 6 at 5:00PM EDT by NWS State College PA
An estimated 65,310 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 18, 2026 · score 58 · 11.8 km
- July 7, 2026 · score 34 · 15.4 km
- July 27, 2026 · score 39 · 16.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 80 % 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 | 80% |
| Coordinates | 40.2642, -78.8536 |
| Nearest City | Johnstown (9 km) |
| Population Exposed | 65.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T19:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a0d568190669735c0a7074a1f5f9a3c5 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Centre, PA; Clearfield, PA; Clinton, PA; Blair, PA; Cambria, PA; Centre, PA; Clearfield, PA; Huntingdon, PA; Cameron, PA; Clearfield, PA; Elk, PA and 4 more areas |
| Headline | Severe Thunderstorm Warning issued June 6 at 3:42PM EDT until June 6 at 5:00PM EDT by NWS State College PA |
| Expires | 2026-06-06T17:00:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a0d568190669735c0a7074a1f5f9a3c58750d9f7.001.1","noaa_urn:oid:2.49.0.1.840.0.519ae4218cc601a936dc307f0cf48c8bf5aad1cf.001.1","noaa_urn:oid:2.49.0.1.840.0.3f59dde7b3dd424d75de3d27ad5dc339db3dec23.001.1","noaa_urn:oid:2.49.0.1.840.0.52484dea7e9d58781e7db7d4eecc6bc37f052319.001.1","noaa_urn:oid:2.49.0.1.840.0.30f560287d363ad3c72879f9e5c04f752da0195c.001.1","noaa_urn:oid:2.49.0.1.840.0.56735fa84bfe444b2232418f5ec057f36866ffe1.001.1","noaa_urn:oid:2.49.0.1.840.0.76e47c8291b84738427f5da0b2be6840ccd72a58.001.1"] |
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 Johnstown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.