This alert expired on 21 June 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 34 recorded within 20 km of this point since 7 April 2026 — 18 others scored the same. The last comparable one was on 4 June 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 20 at 7:23PM EDT until June 20 at 8:15PM EDT by NWS Miami FL
An estimated 4,050,587 people live within 50 km of this point.
Nearby, since 7 April 2026
- July 26, 2026 · score 52 · 1.6 km
- July 26, 2026 · score 52 · 4.8 km
- July 2, 2026 · score 52 · 4.9 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 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) | 52 / 100 |
| Our confidence | 79% |
| Coordinates | 25.7822, -80.1656 |
| Nearest City | Miami (3 km) |
| Population Exposed | 4.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T23:23:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e6e392a7e24b582916abb5126d013a1b4c07cf96.001.1 |
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 June 20 at 7:23PM EDT until June 20 at 8:15PM EDT by NWS Miami FL |
| Expires | 2026-06-20T20:15:00-04:00 |
| 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 Miami (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.