Right now
The most recent data we hold from NOAA arrived 8 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 18 May 2026 at 23:00 UTC. It is kept here as a record.
It is the 24th strongest of the 83 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 18 at 6:02PM EDT until May 18 at 7:00PM EDT by NWS Cleveland OH
An estimated 78,438 people live within 50 km of this point.
Nearby, since 12 March 2026
- August 2, 2026 · score 39 · 5.7 km
- July 28, 2026 · score 39 · 7.5 km
- August 10, 2026 · score 39 · 11.4 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 90 % 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) | 39 / 100 |
| Our confidence | 90% |
| Coordinates | 41.5669, -82.9015 |
| Nearest City | Sandusky (21 km) |
| Population Exposed | 78.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T22:02:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.daff0484f62fc96603494e963df6fd6a |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Reno Beach to The Islands OH; Reno Beach to The Islands OH beyond 5NM off shoreline to US-Canadian border; Reno Beach to The Islands OH; The Islands to Vermilion 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 |
| Headline | Special Marine Warning issued May 18 at 6:02PM EDT until May 18 at 7:00PM EDT by NWS Cleveland OH |
| Expires | 2026-05-18T19:00:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.daff0484f62fc96603494e963df6fd6aba307d54.002.1","noaa_urn:oid:2.49.0.1.840.0.1e577237abf9bb50e43f5f264f1e4d94fb4c4ba9.001.1"] |
| Iem TypeSummary | D |
| Iem City | Haskins |
| Iem County | Wood |
| Iem State | OH |
| Iem Wfo | CLE |
| Iem Remark | Tree limb on transformer. Time estimated via radar. |
| MergedSources | [{"id":"iem_D_41.640_-83.740_1779137100000","source":"iem","severity":"low","severityValue":25,"timestamp":1779137100000,"latitude":41.64,"longitude":-83.74},{"id":"iem_D_42.060_-83.390_1779136500000","source":"iem","severity":"low","severityValue":25,"timestamp":1779136500000,"latitude":42.06,"longitude":-83.39},{"id":"iem_D_41.460_-83.710_1779138240000","source":"iem","severity":"low","severityValue":25,"timestamp":1779138240000,"latitude":41.46,"longitude":-83.71}] |
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 39/100, near Sandusky (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.