This alert expired on 18 May 2026 at 20:45 UTC. It is kept here as a record.
It is the 8th strongest of the 31 detections recorded within 20 km of this point since 13 April 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 18 at 4:35PM EDT until May 18 at 4:45PM EDT by NWS Miami FL
An estimated 400,193 people live within 50 km of this point.
Nearby, since 13 April 2026
- August 9, 2026 · score 43 · 3.0 km
- August 5, 2026 · score 37 · 6.3 km
- August 6, 2026 · score 37 · 6.5 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 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 26.1556, -81.8167 |
| Nearest City | Naples (2 km) |
| Population Exposed | 400.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T20:35:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.37d33cd24a3a418f5b0f828a44d68f83a48f2067.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM |
| Headline | Special Marine Warning issued May 18 at 4:35PM EDT until May 18 at 4:45PM EDT by NWS Miami FL |
| Expires | 2026-05-18T16:45:00-04:00 |
| SenderName | NWS Miami FL |
| 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 10 February 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 Naples?
Calamity.live data shows a weather event with CalamityScore 43/100, near Naples (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.