This alert expired on 20 May 2026 at 20:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 39 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 14 May 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 20 at 3:27PM EDT until May 20 at 4:15PM EDT by NWS State College PA
An estimated 138,238 people live within 50 km of this point.
Nearby, since 17 March 2026
- August 27, 2026 · score 37 · 7.8 km
- May 14, 2026 · score 43 · 12.3 km
- June 15, 2026 · score 67 · 13.0 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 81 % 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) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 40.6000, -76.2167 |
| Nearest City | Lebanon (33 km) |
| Population Exposed | 138.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T19:27:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dauphin, PA; Lebanon, PA; Schuylkill, PA |
| Headline | Severe Thunderstorm Warning issued May 20 at 3:27PM EDT until May 20 at 4:15PM EDT by NWS State College PA |
| Expires | 2026-05-20T16:15:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
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 43/100, near Lebanon (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.