Special Marine Warning issued October 10 at 3:47PM EDT until October 10 at 5:15PM EDT by NWS Jacksonville FL

Archived official description

SMWJAX The National Weather Service in Jacksonville has issued a * Special Marine Warning for... Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM... Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM... 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... * Until 515 PM EDT. * At 346 PM EDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 9 nm west of Jekyll Island to 6 nm west of Guana River State Park, moving east at 20 knots. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Buoy Hlha, High Point, Nassau Sound Approach Buoy 6a, Buoy F, Vilano Beach, St Simons Island Village, Palm Valley, St. Simons Island, Talbot Island, Saint Andrews Sound, Saint Johns Lighted Buoy, Dungeness, St Simons Sound Buoy 9, Atlantic Beach, Mayport, Anna Reef, Amelia City, Buoy Cdh, Jekyll Island, and South Ponte Vedra Beach.

Instructions in this archived message

Move to safe harbor until hazardous weather passes. 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. 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.

How the record changed

Only changes captured by this journal are listed; this is not the authority’s complete history. Timestamps distinguish publication from our capture. Missing messages are never treated as cancellations.

1. newly tracked · Captured 2026-10-10 19:59:51.900Z

   Special Marine Warning issued October 10 at 3:47PM EDT until October 10 at 5:15PM EDT by NWS Jacksonville FL

   Special Marine Warning · Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM; Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM; 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. Severe; likely; urgency: immediate.

   Source issued/updated 2026-10-10T19:47:00.000Z · Source alert

   Source for this capture ↗