000 FZNT02 KNHC 212209 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC SAT MAY 21 2011 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1800 UTC SAT MAY 21. 24 HOUR FORECAST VALID 1800 UTC SUN MAY 22. 48 HOUR FORECAST VALID 1800 UTC MON MAY 23. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC 36 HOUR FORECAST TROUGH FROM 31N56W TO 22N57W TO 17N64W. N OF 23N E OF TROUGH TO 50W S WINDS 20 KT. SEAS TO 8 FT. .48 HOUR FORECAST LOW PRES N OF AREA NEAR 33N53W 1010 MB WITH TROUGH TO 31N53W TO 26N52W TO 22N55W. N OF 23N E OF TROUGH TO 45W SE TO S WINDS 20 TO 25 KT. SEAS TO 9 FT. .GULF OF MEXICO FROM 21N TO 28N W OF 91W SE WINDS 20 KT. SEAS TO 8 FT. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST N OF 24N W OF 93W SE TO S WINDS 20 KT. SEAS TO 8 FT. .REMAINDER OF AREA WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. $$ .FORECASTER WALLY BARNES. NATIONAL HURRICANE CENTER.