This alert expired on 28 August 2026 at 20:00 UTC. It is kept here as a record.
It is the 4th strongest of the 13 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Special Marine Warning issued August 28 at 3:03PM EDT until August 28 at 4:00PM EDT by NWS Tampa Bay Ruskin FL
An estimated 678,005 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 19, 2026 · score 48 · 5.7 km
- August 4, 2026 · score 41 · 9.2 km
- August 28, 2026 · score 52 · 13.3 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 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) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 27.7193, -83.0194 |
| Nearest City | Seminole (26 km) |
| Population Exposed | 678.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-28T19:03:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Tampa Bay waters; Coastal waters from Englewood to Tarpon Springs FL out 20 NM; Waters from Englewood to Tarpon Springs FL out 20 to 60 NM; Coastal waters from Englewood to Tarpon Springs FL out 20 NM; Waters from Englewood to Tarpon Springs FL out 20 to 60 NM |
| Headline | Special Marine Warning issued August 28 at 3:03PM EDT until August 28 at 4:00PM EDT by NWS Tampa Bay Ruskin FL |
| Expires | 2026-08-28T16:00:00-04:00 |
| SenderName | NWS Tampa Bay Ruskin FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.86d6f1c544b2bc0fdf9abc10fc522b94de1dc398.001.1","noaa_urn:oid:2.49.0.1.840.0.87f90934c83e2069e7ddec37518f7e73b5448ee2.002.1"] |
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 48/100, near Seminole (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.