


High Seas Forecast
Issued by NWS
Issued by NWS
315 FZNT01 KWBC 090332 HSFAT1 HIGH SEAS FORECAST FOR METAREA IV NWS OCEAN PREDICTION CENTER WASHINGTON DC 0430 UTC TUE SEP 09 2025 CCODE/1:31:04:01:00/AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE NATIONAL WEATHER SERVICE. EMAIL US AT VOSOPS@NOAA.GOV(LOWERCASE). FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP (ALL LOWERCASE). FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM). SECURITE NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS SYNOPSIS VALID 0000 UTC SEP 09. 24 HOUR FORECAST VALID 0000 UTC SEP 10. 48 HOUR FORECAST VALID 0000 UTC SEP 11. .WARNINGS. ...GALE WARNING... .COMPLEX LOW WITH MEAN CENTER 34N73W 1016 MB MOVING SW 05 KT. WITHIN 240 NM NW OF A LINE FROM 31N78W TO THE LOW TO 40N63W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 32N75W 1016 MB. WITHIN 660 NM NE...360 NM SW...240 NM NW AND 360 NM N QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M. .48 HOUR FORECAST LOW 36N72W 1013 MB. CONDITIONS DIMINISHED. ...GALE WARNING... .LOW 56N53W 1003 MB MOVING E 30 KT. FROM 58N TO 60N W OF 50W AND FROM 53N TO 55N W OF 54W WINDS 20 TO 30 KT. SEAS TO 3 M. .12 HOUR FORECAST LOW 56N47W 1000 MB. WITHIN 240 NM S SEMICIRCLE WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS MOVED E OF AREA. ...GALE WARNING... .LOW 54N41W 1003 MB MOVING NE 30 KT. FROM 46N TO 53N W OF 35W...INCLUDING THE GULF OF SAINT LAWRENCE WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE FROM 43N TO 46N E OF 40W WINDS 20 TO 30 KT. SEAS TO 3 M. .06 HOUR FORECAST LOW 54N35W 999 MB. FROM 46N TO 54N E OF 40W WINDS 25 TO 40 KT. SEAS TO 4 M. .24 HOUR FORECAST LOW E OF THE AREA 57N28W 998 MB. FROM 50N TO 60N E OF 50W AND FROM 60N TO 63N E OF 55W TO W GREENLAND WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE FROM 46N TO 50N E OF 47W AND N OF 60N W OF GREENLAND WINDS TO 25 KT. SEAS TO 3 M. 48 HOUR FORECAST LOW WELL E OF AREA WITH NEW LOW TO FORM NEAR 60N42W 1001 MB. WITHIN 120 NM SW SEMICIRCLE OF NEW LOW WINDS 30 TO 40 KT. SEAS 4 TO 5.5 M. ELSEWHERE FROM 50N TO 60N E OF 50W WINDS 20 TO 30 KT. SEAS 2.5 M TO 4.5 M. ALSO FROM 60N TO 64N BETWEEN 54W AND 60W WINDS TO 25 KT. SEAS TO 3 M. ...GALE WARNING... .LOW 62N42W 994 MB MOVING SE 20 KT. WITHIN 180 NM SE AND S QUADRANTS WINDS TO 25 KT. SEAS TO 3 M. .12 HOUR FORECAST LOW 61N38W 990 MB. FROM 58N TO 60N E OF 44W AND N OF 60N W OF 38W TO E GREENLAND WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M...HIGHEST NEAR 61N39W. .24 HOUR FORECAST LOW MERGED WITH LOW E OF THE AREA 57N28W AND CONDITIONS DESCRIBED IN WARNINGS SECTION ABOVE. .SYNOPSIS AND FORECAST. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 50N BETWEEN 52W AND 40W...FROM 50N TO 55N E OF 43W AND FROM 59N TO 62N W OF 60W. .24 HOUR FORECAST CONDITIONS IMPROVED. .FORECASTER FUTTERMAN. OCEAN PREDICTION CENTER. NWS NATIONAL HURRICANE CENTER MIAMI FL ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND GULF OF AMERICA SYNOPSIS VALID 0000 UTC TUE SEP 9. 24 HOUR FORECAST VALID 0000 UTC WED SEP 10. 48 HOUR FORECAST VALID 0000 UTC THU SEP 11. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC WITHIN 31N79W TO 31N82W TO 30N82W TO 30N80W TO 31N79W NE WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M. .12 HOUR FORECAST CONDITIONS IMPROVE. .ATLC WITHIN 30N35W TO 29N37W TO 29N40W TO 28N40W TO 27N37W TO 25N35W TO 30N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .24 HOUR FORECAST WITHIN 30N35W TO 30N37W TO 29N39W TO 26N37W TO 24N35W TO 30N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .48 HOUR FORECAST WITHIN 28N35W TO 25N36W TO 23N35W TO 28N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .FORECASTER KONARIK. NATIONAL HURRICANE CENTER. $$