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 18 July 2026 at 23:30 UTC. It is kept here as a record.
It is the 26th strongest of the 74 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 8 July 2026. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 18 at 6:29PM EDT until July 18 at 7:30PM EDT by NWS Pittsburgh PA
Nearby, since 17 March 2026
- June 20, 2026 · score 34 · 15.3 km
- July 19, 2026 · score 22 · 15.8 km
- July 18, 2026 · score 22 · 15.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.59/1 |
| Coordinates | 41.1005, -79.7131 |
| Nearest City | New Castle (55 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-18T22:29:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b9d27e55b0a490f518604d2083dafb9c |
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: 2026-07-18T22:29:00.000Z.
First archived: 2026-07-18T22:31:52.332Z. 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 | Clarion, PA; Forest, PA; Venango, PA; Stark, OH; Cameron, PA; Centre, PA; Clearfield, PA; Clinton, PA; Elk, PA; Lycoming, PA; Potter, PA and 6 more areas |
| Headline | Severe Thunderstorm Warning issued July 18 at 6:29PM EDT until July 18 at 7:30PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-18T19:30:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b9d27e55b0a490f518604d2083dafb9cbe6c4027.001.1","noaa_urn:oid:2.49.0.1.840.0.de0bb84aa6b3982b64294c297bc693f1f8f1fb08.001.1","noaa_urn:oid:2.49.0.1.840.0.209343a3f6e36988a4043ffc6bc98abb035d98fb.001.1","noaa_urn:oid:2.49.0.1.840.0.8be666b52336eb1065f2eea4338d7c8fa58db60d.001.1","noaa_urn:oid:2.49.0.1.840.0.208e86e12bcdfa15e1bd499627f94de0cea251e8.001.1","noaa_urn:oid:2.49.0.1.840.0.37fda6063f87f385788d17fbc9c51ae33b175296.001.1","noaa_urn:oid:2.49.0.1.840.0.a96fdab10c88fa0cddbbafd70b2b29e9f59e1567.001.1","noaa_urn:oid:2.49.0.1.840.0.874f7e3aa300503d5a3c2800dac087dcebb8c68c.001.1","noaa_urn:oid:2.49.0.1.840.0.7873c2ee9626d75d2808347be0843b9747bb097b.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.
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