


High Seas Forecast
Issued by NWS
Issued by NWS
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257 FZNT02 KNHC 241531 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC SUN AUG 24 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 AMERICA SYNOPSIS VALID 1200 UTC SUN AUG 24. 24 HOUR FORECAST VALID 1200 UTC MON AUG 25. 48 HOUR FORECAST VALID 1200 UTC TUE AUG 26. .WARNINGS. ...ATLC TROPICAL STORM WARNING... .TROPICAL STORM FERNAND NEAR 31.0N 60.0W 1010 MB AT 1500 UTC AUG 24 MOVING NNE OR 020 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM OF CENTER EXCEPT 90 NM SE QUADRANT. SEAS 4 M OR GREATER WITHIN 0 NM W SEMICIRCLE...30 NM NE QUADRANT AND 120 NM SE QUADRANT WITH SEAS TO 5 M. OVER FORECAST WATERS N OF 29N BETWEEN 57W AND 61W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M. .24 HOUR FORECAST TROPICAL STORM FERNAND N OF AREA NEAR 34.8N 57.8W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NE QUADRANT...90 NM SE QUADRANT...30 NM SW QUADRANT...AND 0 NM NW QUADRANT. OVER FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. PLEASE SEE PART 1. .48 HOUR FORECAST TROPICAL STORM FERNAND WELL N OF AREA NEAR 39.3N 54.3W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM NE QUADRANT...80 NM SE QUADRANT...30 NM SW QUADRANT...AND 20 NM NW QUADRANT. OVER FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. PLEASE SEE PART 1. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .SYNOPSIS AND FORECAST. .ATLC EXCEPT AS NOTED ABOVE...N OF A LINE FROM 31N35W TO 25N45W TO 25N60W TO 25N70W TO 31N76W WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN NW TO N SWELL...EXCEPT N TO NE SWELL W OF 65W. .24 HOUR FORECAST N OF 23N E OF 50W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW TO N SWELL. .48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .ATLC AND CARIBBEAN LOW PRES...AL99...NEAR 13N56.5W 1010 MB. FROM 13N TO 18N BETWEEN 52W AND 58W E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST LOW PRES...AL99...POSSIBLE TROPICAL CYCLONE... NEAR 13N64W 1010 MB. FROM 14N TO 17N BETWEEN 60W AND 67W E WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M. ELSEWHERE FROM 14N TO 20N BETWEEN 55W AND 63W...INCLUDING ATLANTIC EXPOSURES AND IN PASSAGES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M. .48 HOUR FORECAST LOW PRES...AL99...POSSIBLE TROPICAL CYCLONE... NEAR 14N72W 1010 MB. FROM 11N TO 17.5N BETWEEN 66W AND 80W NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. .ATLC 24 HOUR FORECAST N OF 30N BETWEEN 70W AND 75W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .ATLC AND CARIBBEAN 36 HOUR FORECAST FROM 19.5N TO 21N BETWEEN 71W AND 74W...INCLUDING THE ENTRANCE TO THE WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST LITTLE CHANGE. .CARIBBEAN FROM 11N TO 15N BETWEEN 70W AND 75W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST FROM 11N TO 15N BETWEEN 70W AND 80W...INCLUDING THE GULF OF VENEZUELA...E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M FROM 11N TO 14N BETWEEN 74W AND 77W. .48 HOUR FORECAST CONDITIONS MERGED WITH AL99. .CARIBBEAN WITHIN 17N87W TO 16N88W TO 16N87W TO 16N86W TO 17N87W...INCLUDING NEAR THE GULF OF HONDURAS...E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. $$ .FORECASTER GR. NATIONAL HURRICANE CENTER.