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 SEAS ARE GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE  HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE  MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.        GMZ005-212130-  SYNOPSIS FOR KEYS COASTAL WATERS FROM OCEAN REEF TO DRY TORTUGAS  1019 AM EST TUE FEB 21 2017      .SYNOPSIS...A LOW PRESSURE SYSTEM WILL PROGRESS EASTWARD THROUGH  THE GULF OF MEXICO THIS AFTERNOON AND TONIGHT. THIS LOW PRESSURE  SYSTEM WILL STALL JUST WEST OF THE FLORIDA PENINSULA WEDNESDAY AND  WEDNESDAY NIGHT...BEFORE SLOWLY LIFTING NORTHEASTWARD THURSDAY  THROUGH FRIDAY NIGHT. AN AREA OF HIGH PRESSURE WILL MOVE EASTWARD  THROUGH THE SOUTHEASTERN UNITED STATES SATURDAY.    THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM CURRENT...AS OF  FEBRUARY 20TH...    36 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY.  21 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS.  20 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST.  25 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY.  21 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON.  11 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA.  7 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO.  14 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.    GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.    $$
 SEAS ARE GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE  HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE  MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.        GMZ052>055-072>075-212130-  STRAITS OF FLORIDA FROM OCEAN REEF TO CRAIG KEY OUT 20 NM-  STRAITS OF FLORIDA FROM CRAIG KEY TO WEST END OF SEVEN MILE  BRIDGE OUT 20 NM-  STRAITS OF FLORIDA FROM WEST END OF SEVEN MILE BRIDGE TO SOUTH OF  HALFMOON SHOAL OUT 20 NM-  STRAITS OF FLORIDA FROM HALFMOON SHOAL TO 20 NM WEST OF DRY  TORTUGAS OUT 20 NM-  STRAITS OF FLORIDA FROM OCEAN REEF TO CRAIG KEY 20 TO 60 NM OUT-  STRAITS OF FLORIDA FROM CRAIG KEY TO WEST END OF SEVEN MILE  BRIDGE 20 TO 60 NM OUT-  STRAITS OF FLORIDA FROM WEST END OF SEVEN MILE BRIDGE TO SOUTH OF  HALFMOON SHOAL 20 TO 60 NM OUT-  STRAITS OF FLORIDA FROM HALFMOON SHOAL TO 20 NM WEST OF DRY  TORTUGAS 20 TO 60 NM OUT-  1019 AM EST TUE FEB 21 2017    THIS AFTERNOON  NORTHEAST TO EAST WINDS NEAR 15 KNOTS. SEAS 3 TO  5 FEET.  TONIGHT  EAST WINDS 15 TO 20 KNOTS...BECOMING SOUTHEAST TO SOUTH  AFTER MIDNIGHT. SEAS 4 TO 6 FEET. ISOLATED SHOWERS BEFORE  MIDNIGHT. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS AFTER  MIDNIGHT.  WEDNESDAY  SOUTH WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET. WINDS  AND SEAS HIGHER NEAR NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS.  WEDNESDAY NIGHT  SOUTH TO SOUTHWEST WINDS 15 TO 20 KNOTS...BECOMING  WEST AFTER MIDNIGHT. SEAS 4 TO 6 FEET. NUMEROUS SHOWERS AND  SCATTERED THUNDERSTORMS.  THURSDAY  WEST WINDS NEAR 15 KNOTS. SEAS 3 TO 5 FEET. SCATTERED  SHOWERS AND ISOLATED THUNDERSTORMS.  THURSDAY NIGHT THROUGH FRIDAY NIGHT  WEST TO NORTHWEST WINDS 10  TO 15 KNOTS. SEAS 2 TO 4 FEET. ISOLATED SHOWERS.  SATURDAY  NORTHWEST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.  ISOLATED SHOWERS.  SATURDAY NIGHT  NORTHWEST TO NORTH WINDS 10 TO 15 KNOTS. SEAS 2  TO 4 FEET. ISOLATED SHOWERS.    $$

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