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NWS Jacksonville FLMA.W 0238October 4, 2026

Special Marine Warning: Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM and Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM

The National Weather Service office in Jacksonville issued a special marine warning for Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM and Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM, which was in force until 9:30 p.m. local time on October 4. It was the 238th special marine warning the NWS office in Jacksonville issued in 2026.

ExpiredWarning

Issued8:20 p.m. EDT, October 4, 2026
In force8:20 p.m. EDT, October 4, 2026
Expired9:30 p.m. EDT, October 4, 2026

In force for 1.2 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Jacksonville FL
Area
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM and Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM
Level
Warning
Issued
8:20 p.m. EDT, October 4, 2026
Expires
9:30 p.m. EDT, October 4, 2026
CAP severity, certainty, urgency
Severe, Likely, Immediate
VTEC event
KJAX MA.W 0238
Official source
National Weather Service: the notice at its source

NWS notices, October 2026The latest from the National Weather Service

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

For the following areas... Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM... Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM... At 819 PM EDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 10 nm southeast of Tug Rio Caroni to 34 nm south of D R H Buoy to 34 nm east of Talbot Island, moving east at 15 knots. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. Severe thunderstorms will remain over mainly open waters.

What the agency told people to do

Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. If your vessel is caught offshore, immediately secure for heavy weather. Ensure all crew members are wearing USCG approved Type I life jackets and nonessential crew are below decks. Deploy jack lines and harnesses if available. Check life saving equipment, including batteries on handheld radios, for readiness.

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.

The record around this notice