000 FZPN04 KNHC 180421 HSFEP3 HIGH SEAS FORECAST FOR METAREA XVI NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 0515 UTC THU DEC 18 2008 CCODE/1:31:16:01:00/AOW/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 S PACIFIC FROM THE EQUATOR TO 18.5S E OF 120W SYNOPSIS VALID 0000 UTC THU DEC 18. 24 HOUR FORECAST VALID 0000 UTC FRI DEC 19. 48 HOUR FORECAST VALID 0000 UTC SAT DEC 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .48 HOUR FORECAST WITHIN 210 NM EITHER SIDE OF LINE FROM 11S120W TO 05S108W SE WINDS TO 20 KT. SEAS LESS THAN 8 FT. $$ .FORECASTER COHEN/CANGIALOSI. TROPICAL PREDICTION CENTER.