Bulletinset for METAREA 4 Edition date (UTC): 2026-04-19 01:35:02 ============================ HIGH SEAS FORECAST ============================ FZNT01 KWBC 182132 HSFAT1 HIGH SEAS FORECAST FOR METAREA IV NWS OCEAN PREDICTION CENTER WASHINGTON DC 2230 UTC SAT APR 18 2026 CCODE/1:31:04:01:00/AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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). SECURITE NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS SYNOPSIS VALID 1800 UTC APR 18. 24 HOUR FORECAST VALID 1800 UTC APR 19. 48 HOUR FORECAST VALID 1800 UTC APR 20. .WARNINGS. ...STORM WARNING... .LOW 56N35W 979 MB MOVING NE 10 KT. WITHIN 180 NM W AND SW QUADRANTS WINDS 40 TO 50 KT. SEAS 5 TO 7.5 M. ALSO WITHIN 720 NM S...540 NM SW AND W...660 NM NW...AND 480 NM N QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 6 M. ELSEWHERE FROM 40N TO 50N E OF 50W...AND N OF 50N W OF 35W WINDS TO 25 KT. SEAS 2.5 TO 4.5 M. .24 HOUR FORECAST LOW 59N38W 988 MB. WITHIN 240 NM SW AND S QUADRANTS WINDS 35 TO 45 KT. SEAS 6 TO 8.5 M. ALSO FROM 48N TO 54N E OF 51W...AND WITHIN 300 NM OF LOW CENTER WINDS 25 TO 35 KT. SEAS 3 TO 6 M. ELSEWHERE N OF 36N E OF 51W WINDS TO 25 KT. SEAS 2.5 TO 5 M...HIGHEST N OF 42N E OF 40W. .48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER JUST E OF AREA NEAR 52N31W 1002 MB. FROM 42N TO 54N E OF 42W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M...HIGHEST SW OF CENTER. ELSEWHERE N OF 35N E OF 45W WINDS TO 25 KT. SEAS TO 3 M. ...STORM WARNING... .24 HOUR FORECAST NEW LOW INLAND 62N69W 985 MB. BETWEEN 240 NM AND 480 NM E AND SE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M. .36 HOUR FORECAST LOW WELL INLAND AND NEW LOW TO FORM NEAR 60N57W 997 MB. WITHIN 300 NM NE AND E QUADRANTS WINDS 25 TO 40 KT. SEAS 2.5 TO 3.5 M. .48 HOUR FORECAST LOW N OF AREA. WITHIN 240 NM OF W GREENLAND COAST AREA OF SE WINDS 40 TO 50 KT. SEAS 4 TO 6.5 M. ELSEWHERE N OF 55N W OF 44W AREA OF E TO SE WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M. ...GALE WARNING... .24 HOUR FORECAST FROM 44N TO 50N BETWEEN 57W AND 64W AREA OF SE TO S WINDS 25 TO 35 KT. SEAS TO 3 M. ELSEWHERE FROM 38N TO 44N BETWEEN 46W AND 61W WINDS TO 25 KT. SEAS TO 2.5 M. .30 HOUR FORECAST NEW LOW INLAND NEAR 50N65W 1000 MB. WITHIN THE GULF OF SAINT LAWRENCE...AND WITHIN 240 NM NW OF A FRONT FROM LOW CENTER TO 44N66W TO 38N67W TO 31N77W WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M. .48 HOUR FORECAST LOW 57N59W 998 MB. CONDITIONS DESCRIBED WITH STORM WARNING ABOVE. ...HEAVY FREEZING SPRAY WARNING... .MODERATE TO HEAVY FREEZING SPRAY WITHIN 120 NM E OF A LINE FROM 60N60W TO 67N55W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY FROM 45N TO 53N BETWEEN 48W AND 62W...AND NW OF A LINE FROM 55N53W TO 60N47W. .24 HOUR LIGHT FREEZING SPRAY N OF 60N BETWEEN W GREENLAND COAST AND 54W. .48 HOUR FORECAST CONDITIONS IMPROVED. .SYNOPSIS AND FORECAST. .48 HOUR FORECAST LOW 35N64W 1014 MB. WITHIN 240 NM NW OF A FRONT FROM 42N58W TO LOW CENTER TO 31N71W WINDS TO 25 KT. SEAS TO 2.5 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 36N TO 44N W OF 64W...N OF 47N E OF 43W... AND WITHIN 90 NM OF W GREENLAND COAST BETWEEN 45W AND 55W. .24 HOUR FORECAST DENSE FOG NW OF A LINE FROM 34N74W TO 47N51W...AND N OF 53N E OF 43W. .48 HOUR FORECAST DENSE FOG N OF 42N BETWEEN 47W AND 62W. .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 1800 UTC SAT APR 18. 24 HOUR FORECAST VALID 1800 UTC SUN APR 19. 48 HOUR FORECAST VALID 1800 UTC MON APR 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC WITHIN 09N41W TO 10N51W TO 09N54W TO 06N53W TO 07N48W TO 07N40W TO 09N41W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .ATLC 36 HOUR FORECAST COLD FRONT FROM 31N75W TO 29N80W. W OF FRONT WITHIN 31N75W TO 31N81W TO 29N81W TO 30N77W TO 31N75W N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST COLD FRONT FROM 31N72W TO 28N80W. W OF FRONT WITHIN 31N72W TO 31N81W TO 28N80W TO 29N77W TO 31N72W N TO NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M IN N TO NE SWELL. .GULF OF AMERICA 12 HOUR FORECAST COLD FRONT FROM 29N92W TO 26N97W. WITHIN 29N93W TO 30N93W TO 30N94W TO 29N96W TO 27N97W TO 29N93W N TO NE WINDS 20 TO 30 KT. SEAS 2.5 M. .24 HOUR FORECAST COLD FRONT FROM 30N83W TO 25N97W. WITHIN 30N85W TO 31N88W TO 30N94W TO 28N97W TO 22N97W TO 27N93W TO 30N85W NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST COLD FRONT FROM 26N82W TO 25N90W THEN STATIONARY TO 26N97W. WITHIN 27N95W TO 27N96W TO 26N96W TO 27N95W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M IN NE TO E SWELL. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER. $$