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   GMZ005-190830-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1019 PM EDT Thu Apr 18 2019      .SYNOPSIS...A cold front currently over the Mississippi River  valley will slide east across the Gulf of Mexico overnight and  Friday. This front will push through the coastal waters of the  Keys Friday evening. Fresh to strong southeast to south breezes  overnight will turn to the south and southwest Friday. Breezes  will shift to the northwest after the frontal passage. High  pressure will spill southeast into the Gulf of Mexico Saturday,  then slowly build northeast into the Southeastern United States by  Monday or Tuesday. Over the Keys waters, breezes will diminish  Saturday and Saturday night, followed by freshening northeast to  east breezes Monday and Monday night.    The Approximate Shoreward Edge of the Gulf Stream as of  April 18...    30 NM South of Dry Tortugas Light...on Loggerhead Key.  8 NM South of Cosgrove Shoal the Marquesas Keys.  7 NM South of Sand Key Key West.  11 NM South of Looe Big Pine Key.  11 NM South of Sombrero Key Marathon.  4 NM Southeast of Alligator Reef Islamorada.  2 NM Southeast of Molasses Reef Key Largo.  2 NM East of Carysfort Reef Ocean Reef.    Gulf Stream Information Courtesy of the Naval Oceanographic Office.    $$
   GMZ042>044-190830-  Hawk Channel from Ocean Reef to Craig Key out to the reef-  Hawk Channel from Craig Key to west end of Seven Mile Bridge out  to the reef-  Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal  out to the reef-  1019 PM EDT Thu Apr 18 2019    SMALL CRAFT ADVISORY IN EFFECT    OVERNIGHT  Southeast winds near 20 knots, becoming southeast  to south. Seas 2 to 4 feet, building to 3 to 5 feet after  midnight. Nearshore waters rough. Isolated showers late this  evening, then scattered showers and isolated thunderstorms after  midnight.  FRIDAY  South winds near 20 knots. Seas 3 to 4 feet. Nearshore  waters rough. Scattered showers and isolated thunderstorms in the  morning, then scattered showers and thunderstorms in the  afternoon.  FRIDAY NIGHT  Southwest winds 20 to 25 knots, becoming west to  northwest and decreasing to near 20 knots. Seas 3 to 4 feet,  except 4 to 6 feet west of Cosgrove Shoal Light. Nearshore waters  very rough, becoming rough. Widespread showers and scattered  thunderstorms in the evening, then isolated showers after  midnight.  SATURDAY  West to northwest winds 15 to 20 knots, decreasing to  near 15 knots. Seas 2 to 3 feet, except 4 to 6 feet west of  Cosgrove Shoal Light due to west swells. Nearshore waters choppy,  becoming a moderate chop. Isolated showers, especially in the  morning.  SATURDAY NIGHT  Northwest winds 10 to 15 knots, becoming north.  Seas 1 to 3 feet. West of Cosgrove Shoal Light, seas 4 to 5 feet  due to west swells. Nearshore waters a light to moderate chop.  SUNDAY  Northeast winds near 10 knots. Seas 1 to 3 feet due to  variable swells. Nearshore waters a light chop.  SUNDAY NIGHT  Northeast to east winds near 15 knots. Seas 2 to  3 feet. Nearshore waters a moderate chop.  MONDAY  Northeast to east winds 15 to 20 knots. Seas 2 to  4 feet. Nearshore waters choppy.  MONDAY NIGHT THROUGH TUESDAY NIGHT  Northeast to east winds 15  to 20 knots. Seas 2 to 4 feet. Nearshore waters choppy. Isolated  showers.    $$

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