Right now
The most recent data we hold from NOAA arrived 4 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 18:45 UTC. It is kept here as a record.
No stronger detection stands among the 79 recorded within 20 km of this point since 16 March 2026 — 15 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 2:20PM EDT until July 4 at 2:45PM EDT by NWS Pittsburgh PA
Nearby, since 16 March 2026
- June 18, 2026 · score 22 · 2.8 km
- March 17, 2026 · score 22 · 9.2 km
- August 28, 2026 · score 22 · 24.3 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 | 38.5939, -80.4208 |
| Nearest City | Clarksburg (77 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-04T18:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.332a37e352fe5d32f96b6a6735482f33 |
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: 2026-07-04T18:20:00.000Z.
First archived: 2026-07-04T18:21:41.805Z. 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 | Fayette, PA; Preston, WV; Harrison, WV; Lewis, WV; Greene, VA; Madison, VA; Page, VA; Rockingham, VA and 6 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 2:20PM EDT until July 4 at 2:45PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-04T14:45:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.332a37e352fe5d32f96b6a6735482f334cc03883.002.1","noaa_urn:oid:2.49.0.1.840.0.a2ba61c04ef7d8d8a8ee2e7927657fece5c79b01.001.1","noaa_urn:oid:2.49.0.1.840.0.3581a94177340d961ddff184d8d31495720bfe81.001.1","noaa_urn:oid:2.49.0.1.840.0.aebe3f3f958d6cfe53b0f10509bbbebd622cffbd.001.1","noaa_urn:oid:2.49.0.1.840.0.13cee4b3085559374d91162217c053f1f8cc1114.001.1","noaa_urn:oid:2.49.0.1.840.0.ef1c548e7c5e64f8d985c6aaf478e96ed8980658.001.1","noaa_urn:oid:2.49.0.1.840.0.a49ea27664a4905c1f47595ea81fdd320fea1a2b.001.1","noaa_urn:oid:2.49.0.1.840.0.73d3b078b44972fb1716887ef7987a3c09b40cbc.001.1","noaa_urn:oid:2.49.0.1.840.0.4313264cbf6cdeb00f3bdf9815798df5f51f52af.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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