807 FZPN03 KNHC 171521 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC FRI APR 17 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. SECURITE E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE EQUATOR E OF 120W SYNOPSIS VALID 1200 UTC FRI APR 17. 24 HOUR FORECAST VALID 1200 UTC SAT APR 18. 48 HOUR FORECAST VALID 1200 UTC SUN APR 19. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 23N109W TO 23N110W TO 23N111W TO 22N111W TO 21N110W TO 22N109W TO 23N109W NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .WITHIN 30N119W TO 30N126W TO 29N126W TO 29N122W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 M IN N SWELL. .24 HOUR FORECAST 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 1500 UTC FRI APR 17... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... TROUGH EXTENDS FROM 07N77W TO 08N86W TO 05N96W TO 06N108W TO LOW PRES NEAR 04N110W 1012 MB AND TO 02N114W. ITCZ EXTENDS FROM 06N112W TO 04N124W TO 05N130W TO 04N140W. SCATTERED MODERATE WITHIN 60 NM S OF TROUGH BETWEEN 97W AND 104W. SIMILAR ACTIVITY WITHIN 120 NM N OF THE ITCZ BETWEEN 131W AND 135W...WITHIN 60 NM S OF THE ITCZ BETWEEN 127W AND 130W AND WITHIN 30 NM OF THE ITCZ BETWEEN 112W AND 115W. A SOUTHERN HEMISPHERIC ITCZ EXTENDS FROM 02S87W TO 02S106W TO 04S121W TO 03S130W TO 03S140W. SCATTERED MODERATE WITHIN 60 NM N OF THE ITCZ BETWEEN 87W AND 91W... WITHIN 30 NM OF THE ITCZ BETWEEN 103W AND 107W AND WITHIN 30 NM OF THE ITCZ W OF 136W. $$ .FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.  417 FZPN01 KWBC 171532 HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 1630 UTC FRI APR 17 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC APR 17. 24 HOUR FORECAST VALID 1200 UTC APR 18. 48 HOUR FORECAST VALID 1200 UTC APR 19. .WARNINGS. ...STORM WARNING... .LOW W OF AREA NEAR 49N172E 982 MB MOVING NE 15 KT. WITHIN 540 NM E AND SE QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 4.5 M. ELSEWHERE FROM 36N TO 52N W OF 180W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. .12 HOUR FORECAST LOW 52N175E 974 MB. WITHIN 300 NM N AND NE QUADRANTS WINDS 35 TO 50 KT. SEAS 4 TO 6 M. .24 HOUR FORECAST LOW 55N178E 966 MB. WITHIN 300 NM N N AND NW SEMICIRCLES WINDS 40 TO 50 KT. SEAS 4 TO 8.5 M. ELSEWHERE FROM 45N TO 63N W OF 162W WINDS 25 TO 40 KT. SEAS 3 TO 6 M. ALSO N OF 45N W OF 160W WINDS 20 TO 30 KT. SEAS 2.4 TO 4 M. .48 HOUR FORECAST LOW 56N179W 969 MB. WITHIN 300 NM N AND NW QUADRANTS WINDS 35 TO 50 KT. SEAS 4 TO 8 M. ELSEWHERE N OF 46N W OF 156W WINDS 25 TO 40 KT. SEAS 3 TO 6 M. ALSO W AND NW OF A LINE FROM 42N161W TO 49N154W TO 59N148W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M. ...GALE WARNING... .LOW 46N145W 1008 MB MOVING NE 10 KT WILL TURN SE AFTER 24 HOURS. FROM 38N TO 51N BETWEEN 158W AND 133W WINDS 20 TO 30 KT. SEAS TO 3.5 M. .12 HOUR FORECAST LOW 48N142W 1003 MB. WITHIN 300 NM E AND NE...AND BETWEEN 90 NM AND 420 NM W AND SW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST LOW 49N140W 996 MB. BETWEEN 120 NM AND 360 NM NE...AND WITHIN 540 NM S AND SW...AND 360 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M. ELSEWHERE FROM 35N TO 56N BETWEEN 154W AND 128W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. .48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 44N137W 996 MB...AND A SECONDARY CENTER 44N130W 1002 MB. WITHIN 420 NM W SEMICIRCLE OF MAIN CENTER WINDS 25 TO 40 KT. SEAS 4 TO 8 M. ELSEWHERE WITHIN 480 NM N AND NE...AND 360 NM S AND SE QUADRANTS OF SECONDARY CENTER...AND FROM 33N TO 56N BETWEEN 150W AND 133W WINDS 20 T0 30 KT. SEAS 3 TO 6 M. ...GALE WARNING... .24 HOUR FORECAST LOW 41N179W 994 MB. WITHIN 180 NM OF LOW CENTER WINDS 35 TO 45 KT. SEAS 4 TO 7 M. ELSEWHERE WITHIN 300 NM OF LOW CENTER WINDS 25 TO 35 KT. SEAS 3 TO 6 M. ALSO FROM 33N TO 45N W OF 165W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M. .48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED BY LOW 56N179W ABOVE. ...HEAVY FREEZING SPRAY WARNING... .LIGHT TO MODERATE FREEZING SPRAY N OF 58N W OF 173W. .24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 59N W OF 172W. .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 129W N TO NW WINDS TO 25 KT. SEAS TO 3.5 M. .24 HOUR FORECAST CONDITIONS DIMINISHED. .48 HOUR FORECAST NEW LOW 33N176W 1016 MB WITH A FRONT FORECAST TO EXTEND FROM 40N160W TO LOW CENTER TO 30N177W. WITHIN 240 NM W AND SW OF FRONT WINDS TO 25 KT. SEAS TO 3.5 M. .48 HOUR FORECAST FROM 30N TO 35N BETWEEN 165W AND 156W WINDS 20 TO 30 KT. SEAS TO 3.5 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 57N W OF 160W...FROM 46N TO 52N W OF 173W...N OF 56N BETWEEN 146W AND 139W...AND FROM 40N TO 48N BETWEEN 146W AND 135W. .24 HOUR FORECAST DENSE FOG FROM 53N TO 60N W OF 161W... FROM 42N TO 50N W OF 176W...N OF 55N BETWEEN 158W AND 135W...AND FROM 41N TO 55N BETWEEN 130W AND 144W. .48 HOUR FORECAST DENSE FOG WITHIN THE BERING SEA N AND NW OF A LINE FROM 52N180W TO 57N157W...AND N OF 56N E OF 137W. .FORECASTER MILLS. OCEAN PREDICTION CENTER. 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 1200 UTC FRI APR 17. 24 HOUR FORECAST VALID 1200 UTC SAT APR 18. 48 HOUR FORECAST VALID 1200 UTC SUN APR 19. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 23N109W TO 23N110W TO 23N111W TO 22N111W TO 21N110W TO 22N109W TO 23N109W NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .WITHIN 30N119W TO 30N126W TO 29N126W TO 29N122W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 M IN N SWELL. .24 HOUR FORECAST 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 1500 UTC FRI APR 17... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... TROUGH EXTENDS FROM 07N77W TO 08N86W TO 05N96W TO 06N108W TO LOW PRES NEAR 04N110W 1012 MB AND TO 02N114W. ITCZ EXTENDS FROM 06N112W TO 04N124W TO 05N130W TO 04N140W. SCATTERED MODERATE WITHIN 60 NM S OF TROUGH BETWEEN 97W AND 104W. SIMILAR ACTIVITY WITHIN 120 NM N OF THE ITCZ BETWEEN 131W AND 135W...WITHIN 60 NM S OF THE ITCZ BETWEEN 127W AND 130W AND WITHIN 30 NM OF THE ITCZ BETWEEN 112W AND 115W. A SOUTHERN HEMISPHERIC ITCZ EXTENDS FROM 02S87W TO 02S106W TO 04S121W TO 03S130W TO 03S140W. SCATTERED MODERATE WITHIN 60 NM N OF THE ITCZ BETWEEN 87W AND 91W... WITHIN 30 NM OF THE ITCZ BETWEEN 103W AND 107W AND WITHIN 30 NM OF THE ITCZ W OF 136W. $$ .FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.  116 FZNT01 KWBC 171534 HSFAT1 HIGH SEAS FORECAST FOR METAREA IV NWS OCEAN PREDICTION CENTER WASHINGTON DC 1630 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 1200 UTC APR 17. 24 HOUR FORECAST VALID 1200 UTC APR 18. 48 HOUR FORECAST VALID 1200 UTC APR 19. .WARNINGS. ...STORM WARNING... .LOW 62N41W 983 MB MOVING NE 10 KT THEN TURNING N AFTER 12 HOURS. WITHIN 150 NM S SEMICIRCLE WINDS 40 TO 55 KT. SEAS 4 TO 6.5 M. ALSO WITHIN 360 NM E AND SE QUADRANTS...AND WITHIN 300 NM S AND SW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5 M. ELSEWHERE...EXCEPT WHERE OTHERWISE DESCRIBED...N OF 55N W OF 35W WINDS TO 25 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST LOW N OF AREA AND NEW LOW TO FORM NEAR 61N42W 990 MB. BETWEEN 180 NM AND 600 NM SW SEMICIRCLE WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M IN NW SWELL. ELSEWHERE CONDITIONS DESCRIBED WITH STORM WARNING BELOW. .48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY STORM WARNING BELOW. ...STORM WARNING... .COMPLEX LOW WITH FIRST CENTER 52N55W 1004 MB MOVING E 15 KT AND INTENSIFYING...AND SECOND CENTER 47N58W 1004 MB MOVING NE 20 KT. FROM 33N TO 43N BETWEEN 44W AND 74W WINDS TO 25 KT. SEAS TO 2.5 M. .12 HOUR FORECAST COMBINED LOW 51N46W 996 MB. WITHIN 480 NM SE AND 240 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST LOW 53N38W 982 MB. WITHIN 150 NM NW QUADRANT WINDS 40 TO 50 KT. SEAS 5 TO 7 M. ALSO FROM 42N TO 58N E OF 51W WINDS 25 TO 40 KT. SEAS 3 TO 6.5 M...HIGHEST WITHIN 300 NM OF LOW CENTER. ELSEWHERE...EXCEPT WHERE OTHERWISE DESCRIBED...N OF 40N E OF 53W WINDS TO 25 KT. SEAS 2.5 TO 5 M. .42 HOUR FORECAST LOW NEAR 60N35W 974 MB. BETWEEN 180 NM AND 420 NM W AND SW QUADRANTS WINDS 40 TO 55 KT. SEAS 4 TO 7.5 M. .48 HOUR FORECAST LOW 60N39W 978 MB. BETWEEN 90 NM AND 300 NM W AND SW QUADRANTS WINDS 40 TO 55 KT. SEAS 5 TO 8.5 M. ALSO FROM 40N TO 60N E OF 53W.. AND N OF 60N E OF GREENLAND WINDS 25 TO 40 KT. SEAS 3 TO 6 M. ELSEWHERE FROM 35N TO 62N E OF 54W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M. ...GALE WARNING... .LOW 61N53W 998 MB MOVING E 10 KT. WITHIN 240 NM S SEMICIRCLE WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M. ELSEWHERE CONDITIONS DESCRIBED WITH FIRST STORM WARNING ABOVE. .24 HOUR FORECAST LOW AND CONDITIONS ABSORBED WITH LOW 61N42W ABOVE. ...GALE WARNING... .48 HOUR FORECAST FROM 42N TO 51N BETWEEN 55W AND 63W AREA OF SE TO S WINDS 25 TO 35 KT. SEAS TO 3 M. ...HEAVY FREEZING SPRAY WARNING... .MODERATE TO HEAVY FREEZING SPRAY W OF A LINE FROM 55N54W TO 60N56W TO 66N52W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE FROM 55N53W TO 58N50W TO 59N40W TO 62N38W. .24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE FROM 59N58W TO 64N51W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY FROM 45N TO 54N W OF 48W...AND NW OF A LINE FROM 55N53W TO 60N46W. .48 HOUR FORECAST LIGHT FREEZING SPRAY N OF 60N BETWEEN W GREENLAND COAST AND 56W. .SYNOPSIS AND FORECAST. .LOW 37N39W 1016 MB MOVING SE 15 KT. WITHIN 180 NM OF LOW CENTER WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW AND CONDITIONS E OF AREA. .24 HOUR FORECAST NEW LOW NEAR 39N66W 1013 MB. WITHIN 180 NM NE QUADRANT WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS DESCRIBED WITH GALE WARNING IN WARNINGS SECTION ABOVE. .48 HOUR FORECAST NEW LOW INLAND NEAR 60N68W 984 MB. WITHIN 420 NM E QUADRANT WINDS 20 TO 30 KT. SEAS TO 3 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM NW OF A LINE FROM 36N72W TO 43N46W TO 54N37W...AND N OF 58N W OF 35W. .24 HOUR FORECAST DENSE FOG FROM 39N TO 42N BETWEEN 63W AND 71W...AND N OF 50N E OF 40W. .48 HOUR FORECAST DENSE FOG NW OF A LINE FROM 35N74W TO 46N51W...AND N OF 55N E OF 42W. .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 1200 UTC FRI APR 17. 24 HOUR FORECAST VALID 1200 UTC SAT APR 18. 48 HOUR FORECAST VALID 1200 UTC SUN APR 19. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC WITHIN 17N35W TO 15N59W TO 11N61W TO 06N56W TO 07N35W TO 17N35W...INCLUDING ATLANTIC EXPOSURES... WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL. .24 HOUR FORECAST WITHIN 10N39W TO 13N49W TO 12N59W TO 06N52W TO 07N37W TO 10N39W 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. .GULF OF AMERICA 42 HOUR FORECAST WITHIN 30N94W TO 30N95W TO 29N97W TO 28N97W TO 27N97W TO 28N94W TO 30N94W N TO NE WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST WITHIN 30N88W TO 30N90W TO 30N95W TO 28N97W TO 25N97W TO 30N88W 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 CHRISTENSEN. NATIONAL HURRICANE CENTER. $$