000 FZNT02 KNHC 180849 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1030 UTC SUN JUL 18 2021 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0600 UTC SUN JUL 18. 24 HOUR FORECAST VALID 0600 UTC MON JUL 19. 48 HOUR FORECAST VALID 0600 UTC TUE JUL 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC AND CARIBBEAN WITHIN 20N73W TO 20N74W TO 21N72W TO 20N73W...INCLUDING THE WINDWARD PASSAGE...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .18 HOUR FORECAST WITHIN 20N71W TO 20N73W TO 20N74W TO 21N72W TO 20N71W...INCLUDING THE WINDWARD PASSAGE...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .36 HOUR FORECAST WITHIN 20N71W TO 20N73W TO 20N74W TO 21N72W TO 20N71W...INCLUDING THE WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .CARIBBEAN WITHIN 11N71W TO 11N79W TO 14N79W TO 15N77W TO 14N73W TO 11N71W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. .24 HOUR FORECAST WITHIN 11N70W TO 11N76W TO 14N76W TO 18N73W TO 15N72W TO 11N70W E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. .48 HOUR FORECAST WITHIN 11N70W TO 10N76W TO 16N77W TO 17N73W TO 14N70W TO 11N70W E WINDS 20 TO 30 KT. SEAS 8 TO 10 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER ERA. NATIONAL HURRICANE CENTER.