Right now
The most recent data we hold from NOAA arrived 13 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 19 May 2026 at 01:30 UTC. It is kept here as a record.
It is the 16th strongest of the 163 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 9 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 8:48PM EDT until May 18 at 9:30PM EDT by NWS State College PA
Urban PEI: 29,201 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- May 19, 2026 · score 34 · 2.3 km
- September 3, 2026 · score 32 · 10.7 km
- March 17, 2026 · score 34 · 11.8 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 34 / 100 |
| Legacy data-support index | 0.85/1 |
| Coordinates | 41.0818, -77.2545 |
| Nearest City | Williamsport (28 km) |
| Urban exposure index (PEI) | 29.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T00:48:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.476edcc3484d592fbb4e9f4e5e63e9c42810532f.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-19T00:48:00.000Z.
First archived: 2026-05-19T01:10:53.082Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clinton, PA; Lycoming, PA |
| Headline | Severe Thunderstorm Warning issued May 18 at 8:48PM EDT until May 18 at 9:30PM EDT by NWS State College PA |
| Expires | 2026-05-18T21:30:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 1 SSW Park Forest |
| Iem County | Centre |
| Iem State | PA |
| Iem Wfo | CTP |
| Iem Remark | Tree fell down onto garage and car, possibly also impacting the roof of a residence. No injuries reported. |
| MergedSources | [{"id":"iem_D_40.790_-77.920_1779150240000","source":"iem","severity":"low","severityValue":25,"timestamp":1779150240000,"latitude":40.79,"longitude":-77.92}] |
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.
Review the area, threshold and delivery channel in your account.
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