This alert expired on 11 June 2026 at 03:30 UTC. It is kept here as a record.
It is the 11th strongest of the 59 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 10 at 11:20PM EDT until June 10 at 11:30PM EDT by NWS Cleveland OH
An estimated 129,550 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 26, 2026 · score 43 · 7.6 km
- August 10, 2026 · score 43 · 14.1 km
- July 21, 2026 · score 43 · 15.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 42.2475, -79.6680 |
| Nearest City | Erie (37 km) |
| Population Exposed | 129.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T03:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.5ef2d0b452149425250e04cd5530680c |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Erie, PA; Chautauqua, NY |
| Headline | Severe Thunderstorm Warning issued June 10 at 11:20PM EDT until June 10 at 11:30PM EDT by NWS Cleveland OH |
| Expires | 2026-06-10T23:30:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5ef2d0b452149425250e04cd5530680c690a834d.001.1","noaa_urn:oid:2.49.0.1.840.0.ed6fed5fbb3c700392ea0dae482b5aa3867496f7.001.1"] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 37/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.