This alert expired on 13 May 2026 at 22:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 68 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 12 May 2026. 21 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 13 at 5:29PM EDT until May 13 at 6:30PM EDT by NWS Melbourne FL
An estimated 440,907 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 2, 2026 · score 43 · 5.7 km
- June 2, 2026 · score 43 · 6.0 km
- July 26, 2026 · score 43 · 8.4 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 29.2346, -80.9954 |
| Nearest City | Daytona Beach (4 km) |
| Population Exposed | 440.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T21:29:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4e76681f83a65b214c4522b8fdff2224125dfa38.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Flagler Beach to Volusia-Brevard County Line 0-20 nm; Volusia-Brevard County Line to Sebastian Inlet 0-20 nm |
| Headline | Special Marine Warning issued May 13 at 5:29PM EDT until May 13 at 6:30PM EDT by NWS Melbourne FL |
| Expires | 2026-05-13T18:30:00-04:00 |
| SenderName | NWS Melbourne 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 43/100, near Daytona Beach (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.