Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
6 other detections within 20 km in the last 24 hours, the nearest 8 km from here.
This alert expired on 10 September 2026 at 00:00 UTC. It is kept here as a record.
It is the 20th strongest of the 93 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 4 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 9 at 7:21PM EDT until September 9 at 8:00PM EDT by NWS Pittsburgh PA
An estimated 552,887 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 2, 2026 · score 72 · 7.3 km
- September 9, 2026 · score 72 · 9.3 km
- September 9, 2026 · score 41 · 9.4 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 41 out of 100, at 84 % 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) | 41 / 100 |
| Our confidence | 84% |
| Coordinates | 40.5755, -80.4400 |
| Nearest City | Weirton Heights (20 km) |
| Population Exposed | 552.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-09T23:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.149a00dc23569b79ed554f53fbe334fce0826ade.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegheny, PA; Beaver, PA; Washington, PA; Hancock, WV |
| Headline | Severe Thunderstorm Warning issued September 9 at 7:21PM EDT until September 9 at 8:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-09T20:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 1 ENE Alliance |
| Spc County | Stark |
| Spc State | OH |
| Spc Comments | Tree and utility wires down. Time estimated via radar. (CLE) |
| MergedSources | [{"id":"spc_wind_40.92_-81.11_6","source":"spc","severity":"medium","severityValue":45,"timestamp":1788992100000,"latitude":40.92,"longitude":-81.11},{"id":"spc_wind_40.92_-81.09_7","source":"spc","severity":"medium","severityValue":45,"timestamp":1788992160000,"latitude":40.92,"longitude":-81.09}] |
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.
Want to know when something happens near Weirton Heights?