000 FZNT02 KNHC 180334 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 0430 UTC WED MAY 18 2011 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 WED MAY 18. 24 HOUR FORECAST VALID 0000 UTC THU MAY 19. 48 HOUR FORECAST VALID 0000 UTC FRI MAY 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC FRONTAL TROUGH FROM 31N76W TO 25N78W. N OF 28N BETWEEN 75W AND 78W S TO SW WINDS 20 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. .ATLC S OF 12N BETWEEN 46W AND 56W NE TO E WINDS 20 KT. SEAS 8 FT. .24 HOUR FORECAST S OF 13N BETWEEN 50W AND 61W NE TO E WINDS 20 KT. SEAS 8 FT. .42 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. .CARIBBEAN 30 HOUR FORECAST S OF 17N W OF 84W E TO SE WINDS 20 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST S OF 20N W OF 84W E TO SE WINDS 20 KT. SEAS LESS THAN 8 FT. .GULF OF MEXICO 06 HOUR FORECAST N OF 23N W OF 95W SE TO S WINDS 20 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST N OF 20N W OF 92W SE TO S WINDS 20 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST W OF 90W SE TO S WINDS 20 KT. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. $$ .FORECASTER AL. NATIONAL HURRICANE CENTER.