000 FZNT02 KNHC 180406 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 0430 UTC SUN MAR 18 2018 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. SECURITE ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND GULF OF MEXICO SYNOPSIS VALID 0000 UTC SUN MAR 18. 24 HOUR FORECAST VALID 0000 UTC MON MAR 19. 48 HOUR FORECAST VALID 0000 UTC TUE MAR 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC COLD FRONT FROM 31N50W TO 27N63W TO 30N70W. N OF FRONT WINDS 20 KT OR LESS. SEAS 12 TO 16 FT IN NW SWELL. ELSEWHERE WITHIN AREA BOUNDED BY 31N69W TO 31N40W TO 22.5N54W TO 31N69W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL. FROM 10N TO 21N E OF 45W WINDS 20 KT OR LESS. SEAS TO 9 FT PRIMARILY IN NW SWELL. .24 HOUR FORECAST FRONT DISSIPATED. N OF 19N E OF 57W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL. NEW COLD FRONT ALONG 30N BETWEEN 70W. N OF 29N BETWEEN 57W AND 70W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL. .48 HOUR FORECAST COLD FRONT FROM 31N57W TO 29N70W. E OF 55W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL. .CARIBBEAN FROM 10.5N TO 13N BETWEEN 70W AND 77W NE WINDS 20 TO 25 KT. SEAS TO 8 FT. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST LITTLE CHANGE. .CARIBBEAN 48 HOUR FORECAST S OF 17N BETWEEN 85W AND 87W E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.