190 FZNT01 KWBC 170350 HSFAT1 HIGH SEAS FORECAST FOR METAREA IV NWS OCEAN PREDICTION CENTER WASHINGTON DC 0430 UTC FRI APR 17 2026 CCODE/1:31:04:01:00/AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC APR 17. 24 HOUR FORECAST VALID 0000 UTC APR 18. 48 HOUR FORECAST VALID 0000 UTC APR 19. .WARNINGS. ...STORM WARNING... .LOW 61N43W 995 MB MOVING NE 10 KT. N OF 53N E OF 50W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M. .12 HOUR FORECAST LOW 62N41W 982 MB. WITHIN 180 NM SE SEMICIRCLE WINDS 40 TO 55 KT. SEAS 5 TO 7 M. .24 HOUR FORECAST LOW 63N39W 986 MB. N OF 56N E OF 45W WINDS 25 TO 40 KT. SEAS 3 TO 7 M. .48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS DIMINISHED. ...STORM WARNING... .LOW 43N65W 1009 MB MOVING NE 35 KT. WITHIN 480 NM SE...AND 720 NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW 50N47W 1000 MB. WITHIN 480 NM E...AND 420 NM W SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 4 M. .30 HOUR FORECAST LOW 52N42W 996 MB. WITHIN 480 NM E...AND 420 NM W SEMICIRCLES WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. .48 HOUR FORECAST LOW 56N34W 976 MB. WITHIN 360 NM W SEMICIRCLE WINDS 45 TO 60 KT. SEAS 7 TO 12 M. ALSO WITHIN 480 NM W SEMICIRCLE WINDS 30 TO 45 KT. SEAS 4 TO 7 M. ELSEWHERE N OF 40N E OF 52W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M. ...GALE WARNING... .LOW 64N52W 990 MB MOVING SE 20 KT. FROM 53N TO 64N BETWEEN 50W AND 60W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M. .24 HOUR FORECAST LOW 60N4W 995 MB. FROM 55N TO 64N W OF 45W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M. ...HEAVY FREEZING SPRAY WARNING... .MODERATE TO HEAVY FREEZING SPRAY N OF 57N W OF 57W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 51N W OF 48W. .24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 64N W OF 55W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 56N W OF 45W. .48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 50N W OF 50W. .SYNOPSIS AND FORECAST. .48 HOUR FORECAST NEW LOW 41N67W 1016 MB. WITHIN 660 NM NE QUADRANT WINDS 20 TO 30 KT. SEAS TO 3 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 46N BETWEEN 71W AND 56W. .24 HOUR FORECAST DENSE FOG FROM 41N TO 47N BETWEEN 70W AND 44W...AND FROM 47N TO 57N BETWEEN 53W AND 38W. .48 HOUR FORECAST DENSE FOG FROM N OF 52N E OF 38W. .FORECASTER BYRD. 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 FRI APR 17. 24 HOUR FORECAST VALID 0000 UTC SAT APR 18. 48 HOUR FORECAST VALID 0000 UTC SUN APR 19. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC WITHIN 11N45W TO 14N49W TO 15N58W TO 11N60W TO 06N57W TO 07N45W TO 11N45W...INCLUDING ATLANTIC EXPOSURES... WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E SWELL. .24 HOUR FORECAST WITHIN 16N35W TO 16N42W TO 13N55W TO 08N56W TO 07N35W TO 16N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .ATLC WITHIN 26N35W TO 24N39W TO 15N41W TO 12N39W TO 15N35W TO 26N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL. .24 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 AL. NATIONAL HURRICANE CENTER. $$  850 FZPN01 KWBC 170352 HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 0430 UTC FRI APR 17 2026 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). SECURITE PACIFIC S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT TO 53N172E TO 50N180W TO 30N180W ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS SYNOPSIS VALID 0000 UTC APR 17. 24 HOUR FORECAST VALID 0000 UTC APR 18. 48 HOUR FORECAST VALID 0000 UTC APR 19. .WARNINGS. ...STORM WARNING... .12 HOUR FORECAST LOW W OF AREA NEAR 49N172E 981 MB. FROM 37N TO 51N BETWEEN 180W AND 174W WINDS 25 TO 35 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW 52N175E 972 MB. FROM 50N TO 56N W OF 169W WINDS 35 TO 50 KT. SEAS 3.5 TO 7.5 M. ELSEWHERE W OF A LINE FROM 61N179W TO 54N167W TO 44N167W TO 31N180W WINDS 25 TO 35 KT. SEAS 2.5 TO 6 M...HIGHEST NEAR 48N180W. .48 HOUR FORECAST LOW 56N178E 966 MB. WITHIN 360 NM N AND 300 NM W QUADRANTS WINDS 35 TO 50 KT. SEAS 4.5 TO 8.5 M. ELSEWHERE N OF 35N W OF 154W WINDS 25 TO 40 KT. SEAS 2.5 TO 7 M...HIGHEST NEAR 52N170W AND 50N180W. ...GALE WARNING... .LOW 45N147W 1010 MB MOVING NE 10 KT. FROM 39N TO 48N BETWEEN 135W AND 147W WINDS 20 TO 30 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW 49N142W 1004 MB. FROM 40N TO 53N BETWEEN 142W AND 158W WINDS 25 TO 35 KT. SEAS TO 3 M. ELSEWHERE FROM 41N TO 53N BETWEEN 129W AND 142W WINDS 20 TO 30 KT. SEAS TO 3 M. .48 HOUR FORECAST LOW 49N138W 996 MB. FROM 35N TO 56N BETWEEN 135W AND 152W WINDS 25 TO 40 KT. SEAS 2.5 TO 6.5 M...HIGHEST NEAR 48N140W. ...GALE WARNING... .FROM 31N TO 43N BETWEEN 119W AND 128W N TO NW WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE S OF 50N E OF 132W WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST S OF 40N BETWEEN 117W AND 129W WINDS LESS THAN 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST CONDITIONS DIMINISHED. ...GALE WARNING... .30 HOUR FORECAST LOW W OF AREA NEAR 40N177E 993 MB. WITHIN 480 NM E SEMICIRCLE WINDS 25 TO 35 KT. SEAS 3 TO 6 M. .48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW 56N178E DESCRIBED ABOVE. ...HEAVY FREEZING SPRAY WARNING... .LIGHT TO MODERATE FREEZING SPRAY N OF 58N W OF 173W. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 60N W OF 176W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 58N W OF 174W. .SYNOPSIS AND FORECAST. .LOW 59N169W 1004 MB MOVING E 10 KT. FROM 44N TO 57N W OF 162W WINDS TO 25 KT. SEAS TO 3.5 M. .24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS DIMINISHED. .LOW 59N153W 1009 MB MOVING E 10 KT. N OF 53N BETWEEN 141W AND 152W WINDS TO 25 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS DIMINISHED. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 56N W OF 170W...N OF 58N BETWEEN 141W AND 151W...AND FROM 41N TO 45N BETWEEN 139W AND 148W. .24 HOUR FORECAST DENSE FOG FROM 51N TO 58N W OF 167W...FROM 51N TO 60N BETWEEN 138W AND 149W...AND FROM 42N TO 51N BETWEEN 132W AND 143W. .48 HOUR FORECAST DENSE FOG N OF 54N W OF 174W...FROM 44N TO 57N BETWEEN 170W AND 175W...FROM 43N TO 60N BETWEEN 137W AND 144W...AND FROM 43N TO 49N BETWEEN 128W AND 130W. .FORECASTER JOSEPH. OCEAN PREDICTION CENTER. NWS NATIONAL HURRICANE CENTER MIAMI FL E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE EQUATOR E OF 120W SYNOPSIS VALID 0000 UTC FRI APR 17. 24 HOUR FORECAST VALID 0000 UTC SAT APR 18. 48 HOUR FORECAST VALID 0000 UTC SUN APR 19. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 31N113W TO 32N115W TO 30N115W TO 29N113W TO 29N112W TO 31N113W...INCLUDING THE GULF OF CALIFORNIA... S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .WITHIN 23N108W TO 23N109W TO 23N111W TO 21N110W TO 21N109W TO 22N108W TO 23N108W W TO NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .06 HOUR FORECAST WITHIN 30N119W TO 30N127W TO 29N126W TO 28N122W TO 28N120W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL. .24 HOUR FORECAST WITHIN 30N119W TO 30N127W TO 29N126W TO 28N122W TO 28N120W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL. .36 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. CONVECTION VALID AT 0200 UTC FRI APR 17... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A SURFACE TROUGH EXTENDS FROM COASTAL COSTA RICA NEAR 09N83W TO 05N102W. THE ITCZ BEGINS AT 05N102W TO A 1008 MB LOW NEAR 04N110W, THEN BEYOND 06N140W. SCATTERED MODERATE AND ISOLATED STRONG CONVECTION IS OCCURRING FROM 03N-07N BETWEEN 103W-123W. ISOLATED MODERATE CONVECTION IS ALSO OCCURRING FROM 00N-05N BETWEEN 90W-103W AND FROM 03N-10N BETWEEN 127W-135W. A SOUTHERN HEMISPHERE ITCZ EXTENDS FROM 03S93W TO 03S140W. ISOLATED MODERATE CONVECTION IS OBSERVED FROM 03S-07S BETWEEN 86W-89W. .FORECASTER LANDSEA. NATIONAL HURRICANE CENTER. $$