This alert expired on 23 May 2026 at 22:00 UTC. It is kept here as a record.
No stronger detection stands among the 44 recorded within 20 km of this point since 16 March 2026 — 18 others scored the same. The last comparable one was on 21 May 2026. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 23 at 5:08PM EDT until May 23 at 6:00PM EDT by NWS Tampa Bay Ruskin FL
An estimated 558,553 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 29, 2026 · score 48 · 1.3 km
- July 9, 2026 · score 48 · 1.3 km
- August 28, 2026 · score 48 · 5.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 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) | 48 / 100 |
| Our confidence | 79% |
| Coordinates | 26.4467, -81.9456 |
| Nearest City | Iona (8 km) |
| Population Exposed | 558.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-23T21:08:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Charlotte Harbor and Pine Island Sound; Coastal waters from Bonita Beach to Englewood FL out 20 NM |
| Headline | Special Marine Warning issued May 23 at 5:08PM EDT until May 23 at 6:00PM EDT by NWS Tampa Bay Ruskin FL |
| Expires | 2026-05-23T18:00:00-04:00 |
| SenderName | NWS Tampa Bay Ruskin 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 48/100, near Iona (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.