This alert expired on 15 June 2026 at 01:01 UTC. It is kept here as a record.
It is the 45th strongest of the 78 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 11 June 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 14 at 8:52PM EDT until June 14 at 9:00PM EDT by NWS State College PA
An estimated 138,852 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 12, 2026 · score 43 · 3.0 km
- August 28, 2026 · score 43 · 9.6 km
- August 7, 2026 · score 43 · 10.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 40.3644, -76.7737 |
| Nearest City | Harrisburg (14 km) |
| Population Exposed | 138.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-15T00:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.7660cd9dac0d97d58f7c90e7e65aaf3a |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Blair, PA; Cambria, PA; Centre, PA; Huntingdon, PA; Mifflin, PA; Bedford, PA; Fulton, PA; Baltimore, MD; Carroll, MD; Frederick, MD and 6 more areas |
| Headline | Severe Thunderstorm Warning issued June 14 at 8:52PM EDT until June 14 at 9:00PM EDT by NWS State College PA |
| Expires | 2026-06-14T21:01:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7660cd9dac0d97d58f7c90e7e65aaf3adc431073.001.1","noaa_urn:oid:2.49.0.1.840.0.30200878ff7a0c2777e75425dffd832cc0dfaf22.002.1","noaa_urn:oid:2.49.0.1.840.0.bb3fd0b33e24870ff3f03e8f9a5323cd0b59d730.001.1","noaa_urn:oid:2.49.0.1.840.0.198eefc76695f8f0eafd7e55220e640e094a1031.001.1","noaa_urn:oid:2.49.0.1.840.0.4051ff2b8a0c2e5f40123a0125c0ba5b85c443dc.001.1","noaa_urn:oid:2.49.0.1.840.0.bf9ef66dfa988bda98d62a3161e8e033b852bcfd.001.1","noaa_urn:oid:2.49.0.1.840.0.c40705045948447267b1fdaf4b99a440c776896d.001.1","noaa_urn:oid:2.49.0.1.840.0.7cad878b25afdb1a6f1f70911df4360c070e013a.001.1","noaa_urn:oid:2.49.0.1.840.0.8432877dc46d75ec0d7667c10d20f558877887f5.001.1"] |
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 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 Harrisburg?
Calamity.live data shows a weather event with CalamityScore 37/100, near Harrisburg (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.