This alert expired on 16 March 2026 at 16:30 UTC. It is kept here as a record.
No stronger detection stands among the 50 recorded within 20 km of this point since 16 March 2026 — 34 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 11:55AM EDT until March 16 at 12:30PM EDT by NWS State College PA
An estimated 117,992 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 26, 2026 · score 43 · 14.4 km
- March 17, 2026 · score 43 · 17.7 km
- March 16, 2026 · score 43 · 17.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 77 % 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) | 43 / 100 |
| Our confidence | 77% |
| Coordinates | 39.8483, -77.1865 |
| Nearest City | Hanover (18 km) |
| Population Exposed | 118.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T15:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b2dd7a316959422e76fc02a358fd3b41 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Adams, PA; York, PA; Baltimore, MD; Carroll, MD; Frederick, MD; Howard, MD; Montgomery, MD; Washington, MD; Baltimore City, MD; Fairfax, VA; Loudoun, VA; Adams, PA; Franklin, PA |
| Headline | Severe Thunderstorm Warning issued March 16 at 11:55AM EDT until March 16 at 12:30PM EDT by NWS State College PA |
| Expires | 2026-03-16T12:30:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b2dd7a316959422e76fc02a358fd3b41dc55d253.001.1","noaa_urn:oid:2.49.0.1.840.0.da422e508545e0a38aa236b2fa876b9cf378b791.001.1","noaa_urn:oid:2.49.0.1.840.0.e5592f6998f778be89d4da9811adc3c1393a329d.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 Hanover?
Calamity.live data shows a weather event with CalamityScore 43/100, near Hanover (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.