This alert expired on 3 September 2026 at 22:51 UTC. It is kept here as a record.
No stronger detection stands among the 47 recorded within 20 km of this point since 17 March 2026 — 9 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 3 at 6:41PM EDT until September 3 at 6:45PM EDT by NWS Pittsburgh PA
An estimated 542,056 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 6, 2026 · score 48 · 2.6 km
- September 3, 2026 · score 54 · 4.9 km
- August 10, 2026 · score 48 · 6.4 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 54 out of 100, at 91 % 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 | High |
| Calamity Score (ours) | 54 / 100 |
| Our confidence | 91% |
| Coordinates | 40.7679, -81.2168 |
| Nearest City | Canton (14 km) |
| Population Exposed | 542.1K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-03T22:41:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b281f3dfd92b1ebeef68e3bdffe67a5891a67db5.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegheny, PA; Armstrong, PA; Indiana, PA; Washington, PA; Westmoreland, PA; Allegheny, PA; Fayette, PA; Greene, PA; Washington, PA; Westmoreland, PA; Allegheny, PA; Westmoreland, PA and 11 more areas |
| Headline | Severe Thunderstorm Warning issued September 3 at 6:41PM EDT until September 3 at 6:45PM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-03T18:51:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 14 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b281f3dfd92b1ebeef68e3bdffe67a5891a67db5.001.1","noaa_urn:oid:2.49.0.1.840.0.d0ba7924a1b2a95412d990ff9724c3b5c6b1224a.001.1","noaa_urn:oid:2.49.0.1.840.0.32dc9d620d1594cbacfc05f95b5ecc3dc35d6c8e.001.1","noaa_urn:oid:2.49.0.1.840.0.e62eccbb0b093a519a23b22fd2362bd8553df7d6.001.1","noaa_urn:oid:2.49.0.1.840.0.449dfa7d2ae311d858344aaebfb41427582c8d18.001.1","noaa_urn:oid:2.49.0.1.840.0.ee75a0a539b24b210687067718fe5104f62e9fd6.002.1","noaa_urn:oid:2.49.0.1.840.0.d3c6e9c635dabb9a7280e4d753c9c48b586e8a2f.001.1","noaa_urn:oid:2.49.0.1.840.0.1f1acc6007b013aa878e6fa8d67c9240ae80d41e.001.1","noaa_urn:oid:2.49.0.1.840.0.9898d8247c9521d199c95cfd52afca43051afe4b.002.1","noaa_urn:oid:2.49.0.1.840.0.76a911b3fd1a6d7abe8ce648164a8f600e428a2d.001.1","noaa_urn:oid:2.49.0.1.840.0.1a923686c0a02b4bdf7af428ceb9e38d758c1b5c.001.1","noaa_urn:oid:2.49.0.1.840.0.db5dc535a0a43ef75f63ab1f6b1628bf4d5b0113.001.1","noaa_urn:oid:2.49.0.1.840.0.df9958706ccb7bd0ecab7b6ca5b58ff5f4d9bda2.001.1","noaa_urn:oid:2.49.0.1.840.0.6cd3d43834b41069399cfe93dfc5e4bb003c3256.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 2 W Mogadore |
| Spc County | Summit |
| Spc State | OH |
| Spc Comments | (CLE) |
| Iem TypeSummary | H |
| Iem Magnitude | 1.75 |
| Iem Unit | Inch |
| Iem City | 1 N Lakemore |
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 Canton?
Calamity.live data shows a weather event with CalamityScore 54/100, near Canton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.