This alert expired on 28 May 2026 at 14:45 UTC. It is kept here as a record.
No stronger detection stands among the 16 recorded within 20 km of this point since 15 March 2026 — 4 others scored the same. The last comparable one was on 2 April 2026.
What the source measured
NOAA reported: Special Marine Warning issued May 28 at 9:45AM EDT until May 28 at 10:45AM EDT by NWS Miami FL
An estimated 1,781,289 people live within 50 km of this point.
Nearby, since 15 March 2026
- March 15, 2026 · score 52 · 3.5 km
- June 21, 2026 · score 52 · 7.3 km
- July 11, 2026 · score 52 · 11.8 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 81% |
| Coordinates | 25.3921, -80.2407 |
| Nearest City | Leisure City (22 km) |
| Population Exposed | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-28T13:45:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.719d808c1df570f14a39f8e2091f5d755970101e.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Biscayne Bay; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM |
| Headline | Special Marine Warning issued May 28 at 9:45AM EDT until May 28 at 10:45AM EDT by NWS Miami FL |
| Expires | 2026-05-28T10:45:00-04:00 |
| 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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Leisure City (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.