000 FZNT02 KNHC 210151 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 0430 UTC THU OCT 21 2021 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC THU OCT 21. 24 HOUR FORECAST VALID 0000 UTC FRI OCT 22. 48 HOUR FORECAST VALID 0000 UTC SAT OCT 23. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC WITHIN 08N52W TO 08N54W TO 12N54W TO 12N52W TO 10N52W TO 08N52W NE TO E WINDS 20 TO 25 KT. SEAS 8 FT. .24 HOUR FORECAST WITHIN 09N44W TO 09N46W TO 11N47W TO 11N44W TO 10N43W TO 09N44W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE WITHIN 09N42W TO 09N57W TO 11N61W TO 14N58W TO 13N44W TO 09N42W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE SWELL. .48 HOUR FORECAST WITHIN 07N46W TO 06N52W TO 11N60W TO 16N61W TO 15N51W TO 07N46W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. .ATLC 06 HOUR FORECAST WITHIN 30N50W TO 29N54W TO 30N57W TO 31N58W TO 31N50W TO 30N50W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL. .24 HOUR FORECAST WITHIN 28N35W TO 29N42W TO 27N51W TO 31N57W TO 31N35W TO 28N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL. .48 HOUR FORECAST WITHIN 23N35W TO 20N43W TO 21N55W TO 31N48W TO 31N35W TO 23N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL. .CARIBBEAN 24 HOUR FORECAST WITHIN 10N65W TO 11N69W TO 12N74W TO 13N71W TO 12N66W TO 10N65W E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST WITHIN 12N69W TO 11N72W TO 11N74W TO 14N73W TO 13N70W TO 12N69W E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER AL. NATIONAL HURRICANE CENTER.