This alert expired on 6 June 2026 at 23:15 UTC. It is kept here as a record.
No stronger detection stands among the 70 recorded within 20 km of this point since 12 March 2026 — 21 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 6 at 5:43PM EDT until June 6 at 7:15PM EDT by NWS Cleveland OH
An estimated 121,983 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 6, 2026 · score 43 · 2.9 km
- August 10, 2026 · score 39 · 6.2 km
- July 18, 2026 · score 43 · 8.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 41.5408, -82.6979 |
| Nearest City | Sandusky (10 km) |
| Population Exposed | 122.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T21:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.9da9c28006d96127fa60526455e62e8f |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Maumee Bay to Reno Beach OH; Reno Beach to The Islands OH; The Islands to Vermilion OH; Detroit River Lt. to Maumee Bay OH to Reno Beach OH beyond 5NM offshoreline to US-Canadian border; Reno Beach to The Islands OH beyond 5NM off shoreline to US-Canadian border; The Islands to Vermilion OH beyond 5 nm off shoreline to US-Canadian border; Reno Beach to The Islands OH; The Islands to Vermilion OH; Vermilion to Avon Point OH; Reno Beach to The Islands OH beyond 5NM off shoreline to US-Canadian border; The Islands to Vermilion OH beyond 5 nm off shoreline to US-Canadian border; Vermilion to Avon Point OH beyond 5 nm off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued June 6 at 5:43PM EDT until June 6 at 7:15PM EDT by NWS Cleveland OH |
| Expires | 2026-06-06T19:15:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9da9c28006d96127fa60526455e62e8f4898e976.001.1","noaa_urn:oid:2.49.0.1.840.0.4d7131ad46413031176d07856cf506b99733bede.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.
Want to know when something happens near Sandusky?
Calamity.live data shows a weather event with CalamityScore 43/100, near Sandusky (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.