Right now
The most recent data we hold from NOAA arrived 7 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest 6 km from here.
This alert expired on 4 July 2026 at 00:00 UTC. It is kept here as a record.
It is the 25th strongest of the 75 detections recorded within 20 km of this point since 22 March 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 3 at 7:36PM EDT until July 3 at 8:00PM EDT by NWS Pittsburgh PA
Urban PEI: 38,403 within a heuristic 50 km radius; not unique people.
Nearby, since 22 March 2026
- August 8, 2026 · score 34 · 7.1 km
- September 3, 2026 · score 40 · 12.1 km
- July 21, 2026 · score 58 · 13.2 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 | 0.84/1 |
| Coordinates | 41.2722, -79.9797 |
| Nearest City | Hermitage (40 km) |
| Urban exposure index (PEI) | 38.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T23:36:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.7dd1a95effd572abe001def5b9f28df9 |
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: 2026-07-03T23:36:00.000Z.
First archived: 2026-07-03T23:44:32.890Z. 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 | Butler, PA; Mercer, PA; Venango, PA; Clarion, PA; Venango, PA; Mercer, PA |
| Headline | Severe Thunderstorm Warning issued July 3 at 7:36PM EDT until July 3 at 8:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-03T20:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7dd1a95effd572abe001def5b9f28df91120a814.001.1","noaa_urn:oid:2.49.0.1.840.0.ffda08fa38cc588e24f44566aad0ca59006d4445.001.1","noaa_urn:oid:2.49.0.1.840.0.3d71bbb229c0a8f4102d4ebd4f886ac812acb6f6.001.1"] |
| Iem TypeSummary | D |
| Iem City | 1 E Sharon |
| Iem County | Mercer |
| Iem State | PA |
| Iem Wfo | PBZ |
| Iem Remark | Wires down on Kimberly Road and Bentley Ave. |
| MergedSources | [{"id":"iem_D_41.240_-80.490_1783120620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783120620000,"latitude":41.24,"longitude":-80.49}] |
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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