This alert expired on 19 July 2026 at 09:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 8 detections recorded within 20 km of this point since 17 July 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 19 at 4:56AM EDT until July 19 at 5:30AM EDT by NWS Tampa Bay Ruskin FL
An estimated 620,566 people live within 50 km of this point.
Nearby, since 17 July 2026
- August 4, 2026 · score 41 · 11.8 km
- August 28, 2026 · score 52 · 18.9 km
- July 17, 2026 · score 22 · 20.0 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 82 % 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 | 82% |
| Coordinates | 27.7227, -83.0770 |
| Nearest City | Seminole (31 km) |
| Population Exposed | 620.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-19T08:56:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Englewood to Tarpon Springs FL out 20 NM; Coastal waters from Bonita Beach to Englewood FL out 20 NM; Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM; Waters from Englewood to Tarpon Springs FL out 20 to 60 NM |
| Headline | Special Marine Warning issued July 19 at 4:56AM EDT until July 19 at 5:30AM EDT by NWS Tampa Bay Ruskin FL |
| Expires | 2026-07-19T05:30:00-04:00 |
| SenderName | NWS Tampa Bay Ruskin FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ba94638bc9ff3bb2168859e7c28982e9ba821b15.001.1","noaa_urn:oid:2.49.0.1.840.0.b4e0e7838c6f11978b6592d9fa9177e228222bae.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 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.