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Severe weather warning for US waters: Special Marine Warning, Coastal waters from Suwannee River to Keaton Beach out 20 NM
Official warning from NWS Tallahassee FL for Coastal waters from Suwannee River to Keaton Beach out 20 NM, Stephens Passage; Frederick Sound, Tampa Bay waters, Biscayne Bay; Coastal waters from Deerfield …. Valid from 20 Sep 2026, 20:27 to 20 Sep 2026, 22:00 UTC.
Severe NAMMERT Assekuradeur GmbH
According to the issuing service, this warning has since expired.
This alert reproduces an official warning as it stood when we published it and is not updated afterwards. The issuing service is authoritative. For what applies now, see the warning map.
- Area
- Coastal waters from Suwannee River to Keaton Beach out 20 NM, Stephens Passage; Frederick Sound, Tampa Bay waters, Biscayne Bay; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM, Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM
- Warning
- Special Marine Warning
- Level
- Severe
- Valid from
- 20 Sep 2026, 20:27 UTC
- Valid until
- 20 Sep 2026, 22:00 UTC
- Region
- US waters
- Issued by
- NWS Tallahassee FL
What matters now
If your boat lies somewhere it can get serious, you act on the plan you made earlier, not on this page. If you have no plan, today is the day to make one.
Doubled lines, chafe protection, fenders, canvas off: half an hour of work that often decides everything. Once it starts there is no time left for it.
Photograph the boat, the lines and the surroundings before anything happens. After a storm that is the only evidence of how it looked before.
Read what your own contract says about storms and about the hurricane season. Many contracts carry their own rules for it.
When it comes to it, the instruction of the local authority and the marina applies, not what a website says.