000 FZPN04 KNHC 200454 HSFEP3 CCODE/1:31:16:01:00/AOW/NWS/CCODE HIGH SEAS FORECAST FOR METAREA XVI NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 0515 UTC TUE MAY 20 2008 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 TUE MAY 20. 24 HOUR FORECAST VALID 0000 UTC WED MAY 21. 48 HOUR FORECAST VALID 0000 UTC THU MAY 22. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 18.5S94W TO 09S110W. S OF LINE 18.5S88W TO 11S110W TO 18.5S116W WINDS LESS THAN 20 KT. SEAS 8 TO 12 FT IN S SWELL. .24 HOUR FORECAST TROUGH DIFFUSE. S OF LINE 18.5S83W TO 08S98W TO 18.5S112W WINDS LESS THAN 20 KT. SEAS 8 TO 10 FT IN S SWELL. .48 HOUR FORECAST NEW TROUGH 18.5S89W TO 12S99W. S OF LINE 18.5S76W TO 03S95W TO 18.5S117W WINDS LESS THAN 20 KT. SEAS TO 9 FT IN S SWELL. .REMAINDER OF AREA WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. $$ .FORECASTER NELSON. TROPICAL PREDICTION CENTER.