000 FZNT02 KNHC 181546 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC THU OCT 18 2012 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 THU OCT 18. 24 HOUR FORECAST VALID 1200 UTC FRI OCT 19. 48 HOUR FORECAST VALID 1200 UTC SAT OCT 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST .ATLC TROUGH FROM 31N56W TO 23N63W. WITHIN 180 NM SE OF TROUGH N OF 26N WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND SE SWELL...HIGHEST N OF 29N. N OF 29N W OF TROUGH TO 67W WINDS 20 KT OR LESS. SEAS 8 FT IN N TO NE SWELL. .24 HOUR FORECAST WEAKENING TROUGH FROM 31N56W TO 25N61W. N OF 27N E OF TROUGH TO 51W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED NE AND SE SWELL. N OF 29N W OF TROUGH TO 63W WINDS 20 KT OR LESS. SEAS 8 FT IN NE SWELL. .48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .ATLC FROM 13N TO 16N BETWEEN 49W AND 53W WINDS 20 KT OR LESS. SEAS 8 FT IN E SWELL. E OF LINE FROM 19N41W TO 23N46W TO 31N40W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW TO N SWELL...HIGHEST NE. .24 HOUR FORECAST FROM 17N TO 26N E OF 45W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED NW AND NE SWELL. .36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.