This alert expired on 20 July 2026 at 21:45 UTC. It is kept here as a record.
It is the 11th strongest of the 69 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 20 at 4:37PM EDT until July 20 at 5:45PM EDT by NWS Melbourne FL
An estimated 461,518 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 20, 2026 · score 48 · 5.6 km
- August 4, 2026 · score 43 · 5.7 km
- May 10, 2026 · score 43 · 7.9 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 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) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 29.0115, -80.8647 |
| Nearest City | Edgewater (4 km) |
| Population Exposed | 461.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-20T20:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.2f77bf7a6968b55eb4a2e30c57867362 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Flagler Beach to Volusia-Brevard County Line 0-20 nm; Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM; Sebastian Inlet to Jupiter Inlet 0-20 nm |
| Headline | Special Marine Warning issued July 20 at 4:37PM EDT until July 20 at 5:45PM EDT by NWS Melbourne FL |
| Expires | 2026-07-20T17:45:00-04:00 |
| SenderName | NWS Melbourne FL |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2f77bf7a6968b55eb4a2e30c57867362f8c05602.001.1","noaa_urn:oid:2.49.0.1.840.0.86a2a04b08d061fb07c8de4e5b5bafd19aaac4a9.001.1","noaa_urn:oid:2.49.0.1.840.0.a1fa6284fd45e7c0f138cb4183d3a108bd5a313f.001.1","noaa_urn:oid:2.49.0.1.840.0.4d168aa63b638c187ea2fdf62589e30e907b2eb7.001.1","noaa_urn:oid:2.49.0.1.840.0.10c2bec6e5df94351677bc4d32683b869ed4e3c5.001.1"] |
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 Edgewater (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.