NWS Marine Forecast


   GMZ005-032045-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  433 AM EDT Sun May 3 2026      .SYNOPSIS...Moderate south to southwest breezes will clock  northwest to north today and slacken as a weak surface trough  stalls near and just south of the island chain. Generally winds  will then be light to gentle through Monday. Winds will  gradually slacken and clock east to southeast over the following  day or two as high pressure builds southward across Florida and  expands in the Atlantic. Convective and mesoscale diurnal  influences will have a significant effect on winds. Rain and  thunder chances will be well above normal through tonight then  gradually trend downwards through the next couple of days.    The Approximate Shoreward Edge of the Gulf Stream as of April 28...    16 NM South of Dry Tortugas Light...on Loggerhead Key.  10 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  9 NM South of Sand Key Light...off Key West.  9 NM South of Looe Key...off Big Pine Key.  12 NM Southeast of Sombrero Key Light...off Marathon.  10 NM Southeast of Alligator Reef Light...off Islamorada.  6 NM Southeast of Molasses Reef Light...off Key Largo.  6 NM Southeast of Carysfort Reef Light...off Ocean Reef.    Gulf Stream Information Courtesy of the National Weather Service in  Key West based on products from NASA SPoRT and RTOFS.    $$
   GMZ032-035-032045-  Bayside and Gulf side from Craig Key to west end of Seven Mile  Bridge-  Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon  Shoal out to 5 Fathoms-  433 AM EDT Sun May 3 2026    TODAY  Southwest winds 10 to 15 knots, becoming northwest to  north 5 to 10 knots. Seas around 1 foot. Nearshore waters a light  to moderate chop, becoming smooth to a light chop. Showers likely  with a chance of thunderstorms. Winds higher nearer stronger  showers and thunderstorms.  TONIGHT  North to northeast winds 10 to 15 knots, becoming  northeast near 10 knots after midnight. Seas 1 to 2 feet.  Nearshore waters a light to moderate chop, becoming a light chop.  Showers likely with a chance of thunderstorms.  MONDAY  North to northeast winds near 10 knots, decreasing to 5  to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light  chop, becoming a light chop. A chance of showers with a slight  chance of thunderstorms.  MONDAY NIGHT  East winds 10 to 15 knots, decreasing to near 10  knots. Seas 1 to 2 feet. Nearshore waters a light to moderate  chop, becoming a light chop. A chance of showers with a slight  chance of thunderstorms.  TUESDAY  East winds near 10 knots, becoming east to southeast  winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters a light  chop, becoming smooth to a light chop. A slight chance of showers  and thunderstorms.  TUESDAY NIGHT  East to southeast winds 5 to 10 knots. Seas  1 foot or less. Nearshore waters smooth to a light chop. A slight  chance of showers.  WEDNESDAY  East to southeast winds near 10 knots. Seas 1 foot  or less. Nearshore waters a light chop. A slight chance of  showers.  WEDNESDAY NIGHT  East to southeast winds near 10 knots. Seas  1 foot or less. Nearshore waters a light chop.  THURSDAY  Southeast to south winds 5 to 10 knots. Seas 1 foot  or less. Nearshore waters smooth to a light chop.  THURSDAY NIGHT  Variable winds near 5 knots. Seas 1 foot or  less. Nearshore waters smooth.    $$