Right now
The most recent data we hold from NOAA arrived 5 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 8 August 2026 at 00:00 UTC. It is kept here as a record.
It is the 18th strongest of the 82 detections recorded within 20 km of this point since 11 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 7 at 7:46PM EDT until August 7 at 8:00PM EDT by NWS Charleston WV
Urban PEI: 170,483 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- June 22, 2026 · score 67 · 7.3 km
- July 7, 2026 · score 48 · 9.9 km
- June 6, 2026 · score 72 · 10.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.77/1 |
| Coordinates | 40.0022, -79.6559 |
| Nearest City | McKeesport (42 km) |
| Urban exposure index (PEI) | 170.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-07T23:46:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1548b807aa3f96bb1a6fb498d66b4ced |
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: 2026-08-07T23:46:00.000Z.
First archived: 2026-08-07T23:57:27.674Z. 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 | Calhoun, WV; Gilmer, WV; Ritchie, WV; Roane, WV; Wirt, WV; Allegheny, PA; Centre, PA; Huntingdon, PA; Mifflin, PA |
| Headline | Severe Thunderstorm Warning issued August 7 at 7:46PM EDT until August 7 at 8:00PM EDT by NWS Charleston WV |
| Expires | 2026-08-07T20:00:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1548b807aa3f96bb1a6fb498d66b4ced931b0ec3.002.1","noaa_urn:oid:2.49.0.1.840.0.4e79317a357e1720d180ba54a16cd7a13ccdc2a9.001.1","noaa_urn:oid:2.49.0.1.840.0.cb6b8f9ca9d1ea5afa610648cfd542a8043bec80.001.1"] |
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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