This alert expired on 3 September 2026 at 04:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 84 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 3 at 12:11AM EDT until September 3 at 12:45AM EDT by NWS Cleveland OH
An estimated 99,475 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 26, 2026 · score 43 · 16.0 km
- June 14, 2026 · score 39 · 17.0 km
- September 3, 2026 · score 49 · 18.7 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 45 out of 100, at 92 % 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) | 45 / 100 |
| Our confidence | 92% |
| Coordinates | 42.1070, -80.0730 |
| Nearest City | Erie (3 km) |
| Population Exposed | 99.5K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-03T04:11:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.57b13ff573d1bf322961096e1dc465e651595bdc.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Erie, PA |
| Headline | Severe Thunderstorm Warning issued September 3 at 12:11AM EDT until September 3 at 12:45AM EDT by NWS Cleveland OH |
| Expires | 2026-09-03T00:45:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 1 SE Harborcreek |
| Spc County | Erie |
| Spc State | PA |
| Spc Comments | (CLE) |
| Iem TypeSummary | E |
| Iem City | 2 SSE North East |
| Iem County | Erie |
| Iem State | PA |
| Iem Wfo | CLE |
| Iem Remark | Flooding reported at mile marker 41 on I-90 eastbound. |
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 Erie?
Calamity.live data shows a weather event with CalamityScore 45/100, near Erie (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.