360 FZNT01 KWBC 170942 HSFAT1 HIGH SEAS FORECAST FOR METAREA IV NWS OCEAN PREDICTION CENTER WASHINGTON DC 1030 UTC FRI APR 17 2026 CCODE/1:31:04:01:00/AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0600 UTC APR 17. 24 HOUR FORECAST VALID 0600 UTC APR 18. 48 HOUR FORECAST VALID 0600 UTC APR 19. .WARNINGS. ...STORM WARNING... .LOW 61N42W 990 MB MOVING NE 10 KT. WITHIN 120 NM S SEMICIRCLE WINDS 40 TO 50 KT. SEAS 3.5 TO 5.5 M. ELSEWHERE N OF 55N E OF 45W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M. .06 HOUR FORECAST LOW 62N41W 984 MB. WITHIN 180 NM SE SEMICIRCLE WINDS 40 TO 55 KT. SEAS 5 TO 7 M. .24 HOUR FORECAST LOW 64N40W 988 MB. N OF 56N E OF 45W WINDS 25 TO 40 KT. SEAS 3 TO 6 M. .48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS DIMINISHED. ...STORM WARNING... .LOW 48N63W 1005 MB MOVING NE 35 KT. WITHIN 960 NM S QUADRANT WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW 52N41W 990 MB. FROM 41N TO 56N E OF 53W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. .48 HOUR FORECAST LOW E OF AREA NEAR 58N33W 978 MB. WITHIN 240 NM W SEMICIRCLE WINDS 40 TO 55 KT. SEAS 7 TO 11 M. ELSEWHERE E OF A LINE FROM 39N38W TO 61N53W TO 64N46W WINDS 25 TO 40 KT. SEAS 2.5 TO 7 M...HIGHEST NEAR LOW CENTER. ...GALE WARNING... .LOW 65N52W 992 MB MOVING SE 15 KT. N OF 55N W OF 45W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. .24 HOUR FORECAST LOW 60N43W 992 MB. FROM 56N TO 63N BETWEEN 60W AND 45W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. .48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS DIMINISHED. ...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 42N65W 1008 MB. WITHIN 480 NM NE SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 3 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 49N BETWEEN 72W AND 50W. .24 HOUR FORECAST DENSE FOG FROM 42N TO 59N E OF 48W. .48 HOUR FORECAST DENSE FOG FROM 41N TO 45N BETWEEN 68W AND 59W. .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 0600 UTC FRI APR 17. 24 HOUR FORECAST VALID 0600 UTC SAT APR 18. 48 HOUR FORECAST VALID 0600 UTC SUN APR 19. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC WITHIN 14N35W TO 19N35W TO 14N49W TO 15N60W TO 09N59W TO 08N43W TO 14N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED N AND NE SWELL. .24 HOUR FORECAST WITHIN 10N41W TO 12N48W TO 11N53W TO 06N54W TO 07N39W TO 10N41W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E SWELL. .42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .GULF OF AMERICA 48 HOUR FORECAST WITHIN 30N92W TO 30N94W TO 28N97W TO 26N97W TO 28N94W TO 30N92W N TO NE WINDS 20 TO 30 KT. 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. $$  341 FZPN01 KWBC 170942 HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 1030 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 0600 UTC APR 17. 24 HOUR FORECAST VALID 0600 UTC APR 18. 48 HOUR FORECAST VALID 0600 UTC APR 19. .WARNINGS. ...STORM WARNING... .LOW W OF AREA NEAR 46N169E 985 MB MOVING NE 20 KT. WITHIN 600 NM E QUADRANT WINDS TO 25 KT. SEAS TO 2.5 M. .06 HOUR FORECAST LOW W OF AREA NEAR 48N172E 981 MB. WITHIN 480 NM E QUADRANT WINDS 25 TO 35 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW 53N176E 967 MB. WITHIN 300 NM N QUADRANT AND 300 NM NW SEMICIRCLE WINDS 40 TO 50 KT. SEAS 4 TO 8.5 M. ELSEWHERE N OF A LINE FROM 34N180W TO 52N161W WINDS 25 TO 40 KT. SEAS 2.5 TO 6.5 M...HIGHEST NEAR 51N174W JUST S OF THE ALEUTIAN ISLANDS. .48 HOUR FORECAST LOW 56N179W 967 MB. WITHIN 300 NM NW AND SW SEMICIRCLES WINDS 40 TO 50 KT. SEAS 4 TO 8 M. ELSEWHERE N OF 44N W OF 155W WINDS 25 TO 40 KT. SEAS 2.5 TO 6.5 M...HIGHEST NEAR 54N175E AND WITHIN 120 NM S OF ALEUTIAN ISLANDS BETWEEN 162W AND 178E. ALSO S OF 44N W OF 164W AND N OF 54N BETWEEN 155W AND 147W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M...HIGHEST NEAR 38N178W. ...GALE WARNING... .LOW 46N145W 1009 MB MOVING NE 10 KT. WITHIN 300 NM NE OF A LINE FROM 47N145W TO 40N136W WINDS 20 TO 30 KT. SEAS TO 3.5 M. .24 HOUR FORECAST LOW 49N142W 1000 MB. FROM 40N TO 52N BETWEEN 138W AND 154W WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE FROM 42N TO 54N BETWEEN 128W AND 140W WINDS 20 TO 30 KT. SEAS TO 3.5 M. .48 HOUR FORECAST LOW 46N137W 996 MB. FROM 35N TO 56N BETWEEN 133W AND 150W WINDS 25 TO 40 KT. SEAS 2.5 TO 6 M...HIGHEST NEAR 47N140W. ELSEWHERE WITHIN 90 NM E OF A LINE FROM 52N131W TO 48N127W WINDS 20 TO 30 KT. SEAS TO 3 M. ...GALE WARNING... .24 HOUR FORECAST LOW W OF AREA NEAR 39N176E 992 MB. W OF A LINE FROM 40N170W TO 32N180W WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M...HIGHEST NEAR 180W. .48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW 56N179W DESCRIBED ABOVE. ...HEAVY FREEZING SPRAY WARNING... .LIGHT TO MODERATE FREEZING SPRAY N OF 58N W OF 174W. .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. .FROM 30N TO 43N BETWEEN 119W AND 130W N TO NW WINDS 20 TO 30 KT. SEAS TO 3.5 M. .24 HOUR FORECAST S OF 41N E OF 127W WINDS LESS THAN 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST CONDITIONS DIMINISHED. .LOW 58N152W 1008 MB MOVING E 05 KT. N OF 54N BETWEEN 141W AND 150W WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW 59N148W 1010 MB. WITHIN 240 NM W QUADRANT WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS DIMINISHED. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 57N W OF 173W...FROM 54N TO 58N BETWEEN 141W AND 147W AND FROM 41N TO 46N BETWEEN 138W AND 146W. .24 HOUR FORECAST DENSE FOG FROM 51N TO 59N W OF 163W...N OF 47N BETWEEN 137W AND 149W...AND FROM 41N TO 51N BETWEEN 130W AND 142W. .48 HOUR FORECAST DENSE FOG WITHIN THE BERING SEA W OF 169W AND FROM 43N TO 49N BETWEEN 137W AND 141W. .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 0600 UTC FRI APR 17. 24 HOUR FORECAST VALID 0600 UTC SAT APR 18. 48 HOUR FORECAST VALID 0600 UTC SUN APR 19. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 23N109W TO 23N111W TO 22N111W TO 22N110W TO 21N109W TO 22N108W TO 23N109W...INCLUDING WITHIN 60 NM OF SHORE... NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST WITHIN 23N109W TO 23N111W TO 22N111W TO 22N110W TO 21N109W TO 22N108W TO 23N109W...INCLUDING WITHIN 60 NM OF SHORE... NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .WITHIN 30N120W TO 30N125W TO 29N124W TO 29N120W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL. .24 HOUR FORECAST WITHIN 30N120W TO 30N126W TO 29N125W TO 28N122W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL. .30 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 0730 UTC FRI APR 17... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A SURFACE TROUGH EXTENDS FROM COASTAL PANAMA NEAR 09N79W TO 05N100W. THE ITCZ BEGINS AT 05N100W TO A 1012 MB LOW NEAR 06N111W, THEN BEYOND 05N140W. SCATTERED MODERATE AND ISOLATED STRONG CONVECTION IS OCCURRING FROM 03N-08N BETWEEN 90W-135W. A SOUTHERN HEMISPHERE ITCZ EXTENDS FROM 04S93W TO 03S140W. ISOLATED MODERATE CONVECTION IS OBSERVED FROM 03S-08S BETWEEN 85W-89W. .FORECASTER LANDSEA. NATIONAL HURRICANE CENTER. $$