000 FZNT02 KNHC 182100 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER 2230 UTC THU JUL 18 2013 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1800 UTC THU JUL 18. 24 HOUR FORECAST VALID 1800 UTC FRI JUL 19. 48 HOUR FORECAST VALID 1800 UTC SAT JUL 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC WITHIN 420 NM N OF A LINE FROM 08N54W TO 14N37W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND SE SWELL. .24 HOUR FORECAST FROM 11N TO 17N BETWEEN 49W AND 60W WINDS 20 KT OR LESS. SEAS TO 9 FT IN NE TO E SWELL. .48 HOUR FORECAST FROM 13N TO 18N BETWEEN 57W AND 61W WINDS 20 KT OR LESS. SEAS 8 FT IN NE TO E SWELL. .ATLC S OF 21N BETWEEN 70W AND 74W E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST LITTLE CHANGE. .CARIBBEAN FROM 11N TO 15N BETWEEN 72W AND 78W NE TO E WINDS 20 TO 25 KT. SEAS 9 TO 12 FT IN NE TO E SWELL. ELSEWHERE FROM 11N TO 17N BETWEEN 72W AND 82W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL. .24 HOUR FORECAST FROM 11N TO 15N BETWEEN 69W AND 78W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 11 FT IN NE TO E SWELL. ELSEWHERE FROM 11N TO 17N BETWEEN 72W AND 82W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL. .48 HOUR FORECAST FROM 11N TO 18N BETWEEN 70W AND 83W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.