This alert expired on 20 June 2026 at 19:30 UTC. It is kept here as a record.
It is the 7th strongest of the 64 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 19 June 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 20 at 2:51PM EDT until June 20 at 3:30PM EDT by NWS Melbourne FL
An estimated 338,016 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 31, 2026 · score 43 · 2.3 km
- July 30, 2026 · score 43 · 4.5 km
- July 5, 2026 · score 43 · 4.6 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 | 29.0960, -80.8580 |
| Nearest City | New Smyrna Beach (10 km) |
| Population Exposed | 338.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T18:51:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5ded08c2d22af452a48cc94e41c0abc2f8a40393.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Flagler Beach to Volusia-Brevard County Line 0-20 nm |
| Headline | Special Marine Warning issued June 20 at 2:51PM EDT until June 20 at 3:30PM EDT by NWS Melbourne FL |
| Expires | 2026-06-20T15:30:00-04:00 |
| 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 New Smyrna Beach (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.