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.
7 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert is in force until 10 September 2026, 03:00 UTC.
It is the 79th strongest of the 128 detections recorded within 20 km of this point since 27 March 2026. The last comparable one was on 9 September 2026. 22 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 9 at 8:17PM EDT until September 9 at 11:00PM EDT by NWS Pittsburgh PA
An estimated 1,247,659 people live within 50 km of this point.
Nearby, since 27 March 2026
- September 10, 2026 · score 46 · 0.0 km
- September 9, 2026 · score 46 · 0.0 km
- September 5, 2026 · score 46 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 79% |
| Coordinates | 40.4000, -82.9000 |
| Nearest City | Delaware (18 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-10T00:17:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a216cc3da79a65eb813ec6f322d45f4cf503f105.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Carroll, OH; Columbiana, OH; Coshocton, OH; Harrison, OH; Jefferson, OH; Tuscarawas, OH; Allegheny, PA; Armstrong, PA; Beaver, PA; Butler, PA; Indiana, PA; Lawrence, PA; Washington, PA; Westmoreland, PA; Brooke, WV; Hancock, WV; Holmes, OH; Knox, OH; Mahoning, OH; Morrow, OH; Portage, OH; Stark, OH; Trumbull, OH; Wayne, OH |
| Headline | Severe Thunderstorm Watch issued September 9 at 8:17PM EDT until September 9 at 11:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-09T23:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a216cc3da79a65eb813ec6f322d45f4cf503f105.002.1","noaa_urn:oid:2.49.0.1.840.0.e216b23f915ff6b065ec27678b57cba4381013d9.002.1"] |
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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