NWS Marine Forecast


   GMZ005-200830-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  424 PM EDT Mon May 19 2025      .SYNOPSIS...A dry pattern defined by a distant high pressure  system in the central North Atlantic and lack of other major  synoptic influences will lead to breezes shifting from light to  moderate over the next few days. Winds will oscillate throughout  the day peaking overnight and lulling with daytime heating through  Tuesday. Near nil shower chances will persist through Wednesday.  An approaching, decaying front on Thursday will lead to an  increase in rain and thunder chances as well as a period of light  and variable winds.    The Approximate Shoreward Edge of the Gulf Stream as of May  10th...    22 NM South of Dry Tortugas Light...on Loggerhead Key.  8 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  6 NM South of Sand Key Light...off Key West.  5 NM South of Looe Key...off Big Pine Key.  7 NM South of Sombrero Key Light...off Marathon.  12 NM Southeast of Alligator Reef Light...off Islamorada.  8 NM Southeast of Molasses Reef Light...off Key Largo.  2 NM East of Carysfort Reef Light...off Ocean Reef.    Gulf Stream Information Courtesy of the Naval Oceanographic  Office.    $$
   GMZ032-035-200830-  Bayside and Gulfside from Craig Key to west end of Seven Mile  Bridge-  Gulf of America from west end of Seven Mile Bridge to Halfmoon  Shoal out to 5 Fathoms-  424 PM EDT Mon May 19 2025    TONIGHT  Southeast winds near 10 knots, increasing to 10 to 15  knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore  waters a light chop, becoming a light to moderate chop.  TUESDAY  Southeast to south winds near 10 knots. Seas subsiding  to around 1 foot. Nearshore waters a light chop.  TUESDAY NIGHT  Southeast winds near 10 knots. Seas around 1 foot.  Nearshore waters a light chop.  WEDNESDAY  Southeast to south winds 5 to 10 knots, becoming  southwest to west near 5 knots in the afternoon. Seas subsiding  to 1 foot or less. Nearshore waters smooth to a light chop,  becoming smooth.  WEDNESDAY NIGHT  Variable winds near 5 knots. Seas 1 foot or  less. Nearshore waters smooth.  THURSDAY  Variable winds near 5 knots. Seas 1 foot or less.  Nearshore waters smooth. Isolated showers and thunderstorms.  THURSDAY NIGHT  Variable winds near 5 knots. Seas 1 foot or  less. Nearshore waters smooth. Isolated showers and thunderstorms.  FRIDAY  Variable winds near 5 knots. Seas 1 foot or less.  Nearshore waters smooth. Isolated showers.  FRIDAY NIGHT  Winds becoming east near 10 knots. Seas building  to around 1 foot. Nearshore waters becoming a light chop.  Isolated showers.  SATURDAY  East winds near 10 knots. Seas 1 foot or less.  Nearshore waters a light chop. Isolated showers.  SATURDAY NIGHT  East winds 10 to 15 knots. Seas 1 to 2 feet.  Nearshore waters a light to moderate chop. Isolated showers and  thunderstorms.    $$