Right now
The most recent data we hold from NOAA arrived 7 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 4 July 2026 at 20:30 UTC. It is kept here as a record.
It is the 6th strongest of the 62 detections recorded within 20 km of this point since 11 June 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 3:53PM EDT until July 4 at 4:30PM EDT by NWS Pittsburgh PA
Nearby, since 11 June 2026
- September 1, 2026 · score 16 · 12.4 km
- September 3, 2026 · score 46 · 16.5 km
- September 14, 2026 · score 16 · 18.1 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
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 | 0.68/1 |
| Coordinates | 41.5387, -78.8097 |
| Nearest City | Jamestown (72 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-04T19:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8cd00d3ba1baff2afdd5a94eafc79749 |
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: 2026-07-04T19:53:00.000Z.
First archived: 2026-07-04T19:54:30.695Z. 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 | Columbiana, OH; Beaver, PA; Butler, PA; Lawrence, PA; Columbiana, OH; Allegheny, PA; Beaver, PA; Butler, PA; Hancock, WV; Beaver, PA; Butler, PA; Lawrence, PA and 7 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 3:53PM EDT until July 4 at 4:30PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-04T16:30:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8cd00d3ba1baff2afdd5a94eafc79749daeab062.001.1","noaa_urn:oid:2.49.0.1.840.0.c3b28a76a3050397ff7a2ae8c0631d09926634e3.001.1","noaa_urn:oid:2.49.0.1.840.0.44a96835998938bfa60cbcb58eb1a8c6e1662c8e.001.1","noaa_urn:oid:2.49.0.1.840.0.5468fe96bb77bb912425dffed11dc3adabeabcb3.001.1","noaa_urn:oid:2.49.0.1.840.0.48b49d516f0a98cc926b777e7d92e602a3546907.001.1","noaa_urn:oid:2.49.0.1.840.0.efc62032709b26ccfb89c60c1e94e075b4fe8363.001.1","noaa_urn:oid:2.49.0.1.840.0.f5d310a00b2f3fec19d1f0f9735d563e1701f90b.001.1","noaa_urn:oid:2.49.0.1.840.0.eb70a39c0b3f42d7d599d03eff69c39cc20c6fee.002.1","noaa_urn:oid:2.49.0.1.840.0.9fce5cf0e73af6245d92b373cdf14ad256566eae.001.1","noaa_urn:oid:2.49.0.1.840.0.3a0815601b4db94566f73242000897dfc731e81d.001.1"] |
| Iem TypeSummary | D |
| Iem City | 3 W Chapman State Park |
| Iem County | Warren |
| Iem State | PA |
| Iem Wfo | CTP |
| Iem Remark | Trees down on wires along Pleasant Drive. |
| MergedSources | [{"id":"iem_D_41.790_-78.650_1783193280000","source":"iem","severity":"low","severityValue":25,"timestamp":1783193280000,"latitude":41.79,"longitude":-78.65},{"id":"iem_D_41.770_-79.240_1783191000000","source":"iem","severity":"low","severityValue":25,"timestamp":1783191000000,"latitude":41.77,"longitude":-79.24}] |
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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