Right now
The most recent data we hold from NOAA arrived 4 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 21 July 2026 at 13:15 UTC. It is kept here as a record.
No stronger detection stands among the 71 recorded within 20 km of this point since 11 March 2026 — 23 others scored the same. The last comparable one was on 10 July 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 21 at 8:32AM EDT until July 21 at 9:15AM EDT by NWS Cleveland OH
An estimated 1,553,162 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 16, 2026 · score 52 · 5.8 km
- July 5, 2026 · score 52 · 7.1 km
- September 3, 2026 · score 46 · 7.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 81 % 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) | 52 / 100 |
| Our confidence | 81% |
| Coordinates | 41.6514, -81.6643 |
| Nearest City | Collinwood (13 km) |
| Population Exposed | 1.6M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T12:32:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a638af0ec5696ee79871bbabe6837972ef68a238.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Avon Point to Willowick OH; Willowick to Geneva-on-the Lake OH; Avon Point to Willowick OH beyond 5 nm off shoreline to US-Canadian border; Willowick to Geneva-on-the-Lake OH beyond 5NM off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued July 21 at 8:32AM EDT until July 21 at 9:15AM EDT by NWS Cleveland OH |
| Expires | 2026-07-21T09:15:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
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 Collinwood?
Calamity.live data shows a weather event with CalamityScore 52/100, near Collinwood (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.