Right now
The most recent data we hold from NOAA arrived 16 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 18:05 UTC. It is kept here as a record.
It is the 10th strongest of the 60 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 28 June 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 1:55PM EDT until July 4 at 2:00PM EDT by NWS Pittsburgh PA
Urban PEI: 16,152 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- May 21, 2026 · score 34 · 10.5 km
- June 28, 2026 · score 34 · 15.6 km
- June 28, 2026 · score 22 · 19.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 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) | 28 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 39.0379, -79.9284 |
| Nearest City | Clarksburg (45 km) |
| Urban exposure index (PEI) | 16.2K within 50 km |
| Impact Tier | significant |
| Date | 2026-07-04 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.234fe5762af995d09144728466ec2471 |
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: 2026-07-04 — time not reported.
First archived: 2026-07-04T17:55:49.824Z. 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 | Monongalia, WV; Fayette, PA; Monongalia, WV; Preston, WV; Augusta, VA; Rockingham, VA and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 1:55PM EDT until July 4 at 2:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-04T14:05:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.234fe5762af995d09144728466ec247135e482ce.001.1","noaa_urn:oid:2.49.0.1.840.0.e6f513d0311c6745cc236810c19ed1ea7438ba45.001.1","noaa_urn:oid:2.49.0.1.840.0.1272172bad20f23f5e8376de4ff5bb00fe939759.001.1","noaa_urn:oid:2.49.0.1.840.0.0c2befbf35c1f903342a2d765bde802e0e5c5ffe.001.1","noaa_urn:oid:2.49.0.1.840.0.a0593e8ccb7c060c5dcb7d0a60b43bd47acf471b.002.1"] |
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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