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 SEAS 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.        GMZ001-202045-  SYNOPSIS FOR THE GULF OF MEXICO  337 AM EST FRI JAN 20 2017      .SYNOPSIS...A SQUALL LINE IN THE NE AND N CENTRAL GULF WILL  GRADUALLY DISSIPATE TODAY. A VERY STRONG COLD FRONT IS FORECAST  TO SWEEP ACROSS THE ENTIRE GULF OVER THE WEEKEND ACCOMPANIED BY  A LARGE AREA OF STRONG TO GALE FORCE WINDS ACROSS MOST OF THE  WATERS N OF 22N BOTH E AND W OF THE FRONT. CONDITIONS WILL  GREATLY IMPROVE BY TUE AS HIGH PRES BUILDS IN THE WAKE OF THE  FRONT.    $$
 SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE  HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE  MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.        GMZ019-202045-  CENTRAL GULF FROM 22N TO 26N BETWEEN 87W AND 94W-  337 AM EST FRI JAN 20 2017    GALE CONDITIONS POSSIBLE SUN AND SUN NIGHT    TODAY  SE TO S WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.  TONIGHT  SE TO S WINDS 20 TO 25 KT. SEAS 3 TO 5 FT...BUILDING  TO 5 TO 7 FT LATE.  SAT  S WINDS 20 TO 25 KT. SEAS 6 TO 8 FT.  SAT NIGHT  S TO SW WINDS 15 TO 20 KT. SEAS 5 TO 7 FT.  SUN  SW WINDS 20 TO 25 KT...BECOMING W TO NW 25 TO 35 KT IN  THE AFTERNOON. SEAS 6 TO 8 FT...BUILDING TO 9 TO 14 FT IN SW TO W  SWELL IN THE AFTERNOON.  SUN NIGHT  NW WINDS 25 TO 35 KT. SEAS 13 TO 18 FT IN NW SWELL.  MON  NW WINDS 20 TO 30 KT. SEAS 12 TO 17 FT IN NW SWELL.  MON NIGHT  NW WINDS 15 TO 20 KT...BECOMING W 5 TO 10 KT LATE.  SEAS 7 TO 10 FT IN NW SWELL.  TUE  S WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.  TUE NIGHT  SE TO S WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.    $$

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