000 FZNT02 KNHC 181454 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC SUN SEP 18 2011 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC SUN SEP 18. 24 HOUR FORECAST VALID 1200 UTC MON SEP 19. 48 HOUR FORECAST VALID 1200 UTC TUE SEP 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC LOW PRES 1009 MB NEAR 11N35W. FROM 13N TO 20N E OF 39W NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST LOW PRES 1010 MB 11N37W. FROM 16N TO 19N E OF 40W E WINDS 20 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST LOW PRES 1009 MB AT 13N40W. FROM 13N TO 21N E OF 42W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. .ATLC S OF 22N BETWEEN 65W AND 70W NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT. .12 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. $$ .FORECASTER DGS. NATIONAL HURRICANE CENTER.