


High Seas Forecast
Issued by NWS
Issued by NWS
045 FZNT01 KWBC 310936 HSFAT1 HIGH SEAS FORECAST FOR METAREA IV NWS OCEAN PREDICTION CENTER WASHINGTON DC 1030 UTC SUN AUG 31 2025 CCODE/1:31:04:01:00/AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0600 UTC AUG 31. 24 HOUR FORECAST VALID 0600 UTC SEP 01. 48 HOUR FORECAST VALID 0600 UTC SEP 02. .WARNINGS. ...GALE WARNING... .LOW 51N47W 1001 MB MOVING NE 25 KT THEN TURNING E AFTER 12 HOURS. WITHIN 240 NM S AND 360 NM SE QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 5.5 M. ELSEWHERE FROM 41N TO 53N BETWEEN 37W AND 52W WINDS TO 25 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW E OF AREA 53N32W 999 MB. WITHIN 240 NM SW SEMICIRCLE AND 300 NM S QUADRANT WINDS 30 TO 45 KT. SEAS 4 TO 5.5 M. ELSEWHERE FROM 43N TO 54N E OF 45W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. .48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA. ...GALE WARNING... .LOW 31N79W 1011 MB MOVING NE 15 KT. WITHIN 120 NM NW SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 2.5 M. .09 HOUR FORECAST LOW 32N75W 1009 MB. WITHIN 120 NM NW QUADRANT WINDS 25 TO 35 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW 34N68W 1010 MB. WITHIN 120 NM N AND NW QUADRANTS WINDS 25 TO 40 KT. SEAS 2.5 TO 4 M. ELSEWHERE WITHIN 120 NM EITHER SIDE OF A LINE FROM 31N80W TO 40N60W WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW 35N68W 1013 MB. WITHIN 120 NM N AND 420 NM NE QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 180 NM EITHER SIDE OF A LINE FROM 33N77W TO 43N58W WINDS TO 25 KT. SEAS TO 2.5 M. ...GALE WARNING... .LOW 40N60W 1017 MB MOVING NE 25 KT. WITHIN 300 NM SE QUADRANT WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW NEAR 45N49W 1013 MB. WITHIN 360 NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 2.5 M. .48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 51N37W 1001 MB. WITHIN 300 NM SW AND 600 NM S QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE WITHIN 540 NM NE OF A LINE FROM 38N38W TO 50N52W WINDS TO 25 KT. SEAS TO 2.5 M. ...GALE WARNING... .42 HOUR FORECAST NEW LOW 66N60W 992 MB. WITHIN 180 NM E AND 300 NM SE QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M. .48 HOUR FORECAST LOW 66N59W 992 MB. WITHIN 120 NM OF W GREENLAND COAST N OF 61N WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE N OF 50N W OF 50W WINDS TO 25 KT. SEAS TO 2.5 M. .SYNOPSIS AND FORECAST. .LOW 62N54W 1003 MB MOVING SE 10 KT. WITHIN 180 NM NE QUADRANT WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LOW 60N48W 1004 MB. WITHIN 120 NM E AND 300 NM S QUADRANT WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. .48 HOUR FORECAST LOW AND CONDITIONS DESCRIBED WITH LOW 51N37W IN WARNINGS SECTION ABOVE. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 56N BETWEEN 45W AND 54W...S OF 33N BETWEEN 71W AND 79W...AND WITHIN 240 NM NW OF A LINE FROM 56N60W TO 65N50W. .24 HOUR FORECAST DENSE FOG FROM 42N TO 52N BETWEEN 45W AND 55W...FROM 52N TO 55N E OF 39W...WITHIN 300 NM NE OF A LINE FROM 55N50W TO 67N57W...AND N OF 60N W OF 60W. .48 HOUR FORECAST DENSE FOG FROM 47N TO 56N E OF 43W...WITHIN 120 NM EITHER SIDE OF A LINE FROM 36N70W TO 41N59W...AND N OF 55N W OF 50W. .FORECASTER ANDERSON. 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 0600 UTC SUN AUG 31. 24 HOUR FORECAST VALID 0600 UTC MON SEP 1. 48 HOUR FORECAST VALID 0600 UTC TUE SEP 2. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC 12 HOUR FORECAST WITHIN 31N75.5W TO 31N81W TO 30.5N80.5W TO 30.5N79.5W TO 30.5N79W TO 30.5N76W TO 31N75.5W N TO NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST WITHIN 31N75W TO 31N81W TO 30N81W TO 30N79W TO 30N77W TO 30N75W TO 31N75W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .48 HOUR FORECAST WITHIN 31N76.5W TO 31N79.5W TO 30.5N79W TO 30.5N77W TO 31N76.5W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E SWELL. .CARIBBEAN WITHIN 13N70W TO 13N75W TO 11N77W TO 10N76W TO 11N74W TO 11N72W TO 13N70W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST WITHIN 13N74W TO 13N76W TO 12N77W TO 11N76W TO 11N73W TO 13N74W NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST WITHIN 13N70W TO 13N74W TO 12N74W TO 11N72W TO 11N69W TO 13N70W...INCLUDING THE GULF OF VENEZUELA...E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .FORECASTER DELGADO. NATIONAL HURRICANE CENTER. $$