Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 14 May 2026 at 00:15 UTC. It is kept here as a record.
It is the 4th strongest of the 115 detections recorded within 20 km of this point since 12 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 May 13 at 7:52PM EDT until May 13 at 8:15PM EDT by NWS State College PA
An estimated 213,687 people live within 50 km of this point.
Nearby, since 12 March 2026
- May 14, 2026 · score 43 · 0.0 km
- August 10, 2026 · score 43 · 3.8 km
- July 19, 2026 · score 43 · 5.9 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 91 % 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 | 91% |
| Coordinates | 40.1776, -76.8529 |
| Nearest City | Harrisburg (11 km) |
| Population Exposed | 213.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T23:52:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9b5e541fe0bb87ffe14e1a1fe2e47d96a02579d2.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dauphin, PA; Lancaster, PA; Lebanon, PA; York, PA |
| Headline | Severe Thunderstorm Warning issued May 13 at 7:52PM EDT until May 13 at 8:15PM EDT by NWS State College PA |
| Expires | 2026-05-13T20:15:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 2 ENE Blain |
| Iem County | Perry |
| Iem State | PA |
| Iem Wfo | CTP |
| Iem Remark | Corrects previous tstm wnd dmg report from 2 ENE Blain. WIRES CAME DOWN ON A COMBINE. |
| MergedSources | [{"id":"iem_D_40.430_-77.090_1778714100000","source":"iem","severity":"low","severityValue":25,"timestamp":1778714100000,"latitude":40.43,"longitude":-77.09},{"id":"iem_D_40.350_-77.480_1778709900000","source":"iem","severity":"low","severityValue":25,"timestamp":1778709900000,"latitude":40.35,"longitude":-77.48}] |
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.
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