NWS Marine Forecast



 Hazardous marine condition(s):
 Short Term Forecast
   GMZ005-152030-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  429 AM EDT Tue Jul 15 2025      .SYNOPSIS...Weak low pressure continues to become better organized  in the vicinity of the Space Coast. However, the overall pressure  pattern remains rather weak, therefore, light to gentle southeast  to south breezes are expected to continue today. In addition,  another round of showers and thunderstorms are expected today with  the main threats being gusty winds and confused seas near  convection. As the weak low pressure shifts off to the west and  into the Gulf, high pressure will build in behind it strengthening  the pressure gradient. This will lead to gentle to moderate  breezes tonight. High pressure remains anchored over the central  Atlantic with its western periphery extending into the Keys  through the weekend with gentle to moderate east to southeast  breezes continuing, occasionally becoming moderate to fresh.    The Approximate Shoreward Edge of the Gulf Stream as of July 15...    18 NM South of Dry Tortugas Light...on Loggerhead Key.  3 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  1 NM South of Sand Key Light...off Key West.  4 NM South of Looe Key...off Big Pine Key.  4 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.  3 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.    $$
   GMZ031-152030-  Florida Bay including Barnes Sound, Blackwater Sound, and  Buttonwood Sound-  429 AM EDT Tue Jul 15 2025    TODAY  South winds near 5 knots, becoming southeast to south and  increasing to 5 to 10 knots. Bay waters smooth, becoming smooth  to a light chop. Bay waters rough and winds higher in and around  widespread showers and scattered thunderstorms.  TONIGHT  Southeast to south winds 5 to 10 knots, becoming southeast  and increasing to 10 to 15 knots after midnight. Bay waters  smooth to a light chop, becoming a light to moderate chop.  Numerous showers and scattered thunderstorms.  WEDNESDAY  Southeast winds near 15 knots, decreasing to near 10  knots in the afternoon. Bay waters a moderate chop, becoming a  light chop. Widespread showers and scattered thunderstorms.  WEDNESDAY NIGHT  East to southeast winds 10 to 15 knots. Bay  waters a light to moderate chop. Scattered showers and isolated  thunderstorms.  THURSDAY  East to southeast winds near 15 knots. Bay waters a  moderate chop. Numerous showers and isolated thunderstorms.  THURSDAY NIGHT  East to southeast winds near 15 knots. Bay  waters a moderate chop. Isolated showers and thunderstorms.  FRIDAY  East to southeast winds near 15 knots. Bay waters a  moderate chop. Scattered showers and isolated thunderstorms.  FRIDAY NIGHT  East winds 10 to 15 knots. Bay waters a light to  moderate chop. Isolated showers and thunderstorms.  SATURDAY  East winds 10 to 15 knots. Bay waters a light to  moderate chop. Scattered showers and isolated thunderstorms.  SATURDAY NIGHT  East winds 10 to 15 knots. Bay waters a light  to moderate chop. Isolated showers and thunderstorms.    $$