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   GMZ005-201430-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  419 AM EDT Tue Apr 20 2021      .SYNOPSIS...A frontal boundary stalled over South Florida and the  southeastern Gulf of Mexico will focus showers and thunderstorms  today. This weakening boundary will slide south tonight and  Wednesday. In the wake of the front, gentle to moderate northerly  breezes on Thursday will veer toward the northeast to east and  freshen by Thursday night. East to southeast breezes will return  Friday or Friday night.    The Approximate Shoreward Edge of the Gulf Stream as of  April 17...    54 NM South of Dry Tortugas Light...on Loggerhead Key.  37 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  21 NM South of Sand Key Light...off Key West.  3 NM South of Looe Key...off Big Pine Key.  4 NM South of Sombrero Key Light...off Marathon.  7 NM Southeast of Alligator Reef Light...off Islamorada.  8 NM Southeast of Molasses Reef Light...off Key Largo.  6 NM East of Carysfort Reef Light...off Ocean Reef.    Gulf Stream Information Courtesy of the Naval Oceanographic  Office.    $$
   GMZ052>055-072>075-201430-  Straits of Florida from Ocean Reef to Craig Key out 20 NM-  Straits of Florida from Craig Key to west end of Seven Mile  Bridge out 20 NM-  Straits of Florida from west end of Seven Mile Bridge to south of  Halfmoon Shoal out 20 NM-  Straits of Florida from Halfmoon Shoal to 20 NM west of Dry  Tortugas out 20 NM-  Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-  Straits of Florida from Craig Key to west end of Seven Mile  Bridge 20 to 60 NM out-  Straits of Florida from west end of Seven Mile Bridge to south of  Halfmoon Shoal 20 to 60 NM out-  Straits of Florida from Halfmoon Shoal to 20 NM west of Dry  Tortugas 20 to 60 NM out-  419 AM EDT Tue Apr 20 2021    TODAY  South to southwest winds near 15 knots, becoming  variable near 10 knots. Seas 3 to 5 feet, subsiding to 1 to 2 feet  in the afternoon. Isolated showers.  TONIGHT  South to southwest winds near 10 knots. Seas 1 to 3  feet. Isolated showers.  WEDNESDAY  Southwest winds near 10 knots, becoming west. Seas 1  to 3 feet. Isolated showers and thunderstorms.  WEDNESDAY NIGHT  West to northwest winds near 10 knots, becoming  northwest to north. Seas 1 to 3 feet. Scattered showers and  isolated thunderstorms, then isolated showers and thunderstorms  late.  THURSDAY  Northeast winds near 10 knots. Seas 1 to 3 feet.  Isolated showers.  THURSDAY NIGHT  Northeast to east winds near 10 knots,  increasing to 10 to 15 knots. Seas 1 to 3 feet, building to 2 to  4 feet. Isolated showers.  FRIDAY  East winds 10 to 15 knots. Seas 3 to 4 feet. Isolated  showers.  FRIDAY NIGHT  East to southeast winds 15 to 20 knots. Seas 4 to  5 feet. Isolated showers.  SATURDAY  East to southeast winds near 15 knots. Seas 3 to 5  feet. Isolated showers.  SATURDAY NIGHT  Southeast to south winds 10 to 15 knots. Seas 2  to 4 feet. Isolated showers.    $$

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