


High Seas Forecast
Issued by NWS
Issued by NWS
685 FZPN02 KWBC 181725 HSFEPI HIGH SEAS FORECAST FOR METAREA XII NWS OCEAN PREDICTION CENTER WASHINGTON DC 1745 UTC SAT OCT 18 2025 CCODE/2:31:12:01:00/AOW+POR/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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). PLEASE SEE PROPOSAL TO ALIGN NWS PACIFIC HIGH SEAS FORECASTS WITH METAREA XII: HTTPS://OCEAN.WEATHER.GOV/HIGHSEASPACIFICPROPOSAL/ (LOWERCASE). FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM). SECURITE PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT TO 50N 160E ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS SYNOPSIS VALID 1200 UTC OCT 18. 24 HOUR FORECAST VALID 1200 UTC OCT 19. 48 HOUR FORECAST VALID 1200 UTC OCT 20. .WARNINGS. ...HURRICANE FORCE WIND WARNING... .COMPLEX LOW WITH MAIN CENTER 43N177E 990 MB MOVING NE 35 KT AND RAPIDLY INTENSIFYING. WITHIN 240 NM SW QUADRANT WINDS 40 TO 50 KT. SEAS 3.5 TO 6 M. ELSEWHERE FROM 34N TO 47N BETWEEN 171W AND 166E AND WITHIN 240 NM SW OF A LINE FROM 38N167E TO 33N160E WINDS 25 TO 40 KT. SEAS 2.5 TO 6 M...HIGHEST NEAR 42N174E. .12 HOUR FORECAST LOW 48N174E 966 MB. WITHIN 300 NM SE AND 180 NM S QUADRANTS WINDS 60 TO 75 KT. SEAS 4 TO 8 M. .24 HOUR FORECAST LOW 50N165W 965 MB. WITHIN 180 NM S SEMICIRCLE WINDS 60 TO 80 KT. SEAS 9 TO 13.5 M. ALSO FROM 46N TO 54N BETWEEN 153W AND 172W WINDS 45 TO 60 KT. SEAS 3.5 TO 9 M...HIGHEST SW OF LOW CENTER. ELSEWHERE WITHIN 360 NM NE...600 NM SE...540 NM SW...AND 420 NM NW QUADRANTS WINDS 30 TO 45 KT. SEAS 3 TO 7 M. .48 HOUR FORECAST LOW 55N145W 973 MB. FROM 48N TO 55N BETWEEN 137W AND 156W WINDS 35 TO 50 KT. SEAS 4.5 TO 11 M...HIGHEST NEAR 50N149W. ALSO N OF 44N BETWEEN 129W AND 161W WINDS 25 TO 40 KT. SEAS 4.5 TO 9 M. ELSEWHERE N OF A LINE FROM 39N175W TO 34N168W TO 51N128W WINDS TO 25 KT. SEAS 2.5 TO 5 M. HIGHEST SW OF LOW. ...STORM WARNING... .COMPLEX LOW WITH MAIN CENTER 52N146W 980 MB MOVING E 25 KT. FRONT EXTENDS FROM 56N139W TO 54N132W TO 50N131W. WITHIN 360 NM S QUADRANT AND WITHIN 90 NM NE OF FRONT WINDS 25 TO 50 KT. SEAS 5.5 TO 10.5 M...HIGHEST S OF LOW. ALSO FROM 42N TO 58N BETWEEN 128W AND 160W WINDS 25 TO 40 KT. SEAS 4 TO 8 M...HIGHEST S AND SW OF LOW. ELSEWHERE FROM 38N TO 60N BETWEEN 124W AND 160W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M...HIGHEST S AND SW OF LOW. .24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 51N128W 996 MB. FROM 41N TO 54N BETWEEN 124W AND 142W WINDS 25 TO 40 KT. SEAS 4.5 TO 9 M. ELSEWHERE FROM 37N TO 59N E OF 156W WINDS 20 TO 30 KT. SEAS 2.5 TO 5.5 M IN MIXED SWELL. .48 HOUR FORECAST LOW WELL INLAND. FROM 33N TO 42N BETWEEN 122W AND 130W WINDS 20 TO 30 KT. SEAS 3 TO 5.5 M IN MIXED SWELL. ELSEWHERE S OF 52N BETWEEN 122W AND 149W WINDS TO 25 KT. SEAS 2.5 TO 4 M. ...STORM WARNING... .24 HOUR FORECAST LOW 49N161E 987 MB. WITHIN 360 NM SE QUADRANT...WITHIN 120 NM N OF A LINE FROM 49N160E TO 50N163E TO 49N167E...AND WITHIN 180 NM E OF A FRONT FROM 49N166E TO 44N167E TO 40N162E WINDS 35 TO 45 KT. SEAS 3 TO 6 M. ELSEWHERE FROM 38N TO 52N W OF 174E WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M. .30 HOUR FORECAST LOW 50N165E 980 MB. WITHIN 300 NM S QUADRANT WINDS 50 TO 60 KT. SEAS 5.5 TO 9 M. .48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 51N177W 987 MB. FROM 44N TO 50N BETWEEN 166W AND 169E WINDS 35 TO 50 KT. SEAS 5.5 TO 11 M. ALSO FROM 41N TO 56N BETWEEN 163W AND 164W WINDS 25 TO 40 KT. SEAS 4 TO 8 M...EXCEPT N OF 52N SEAS 3 TO 5 M. ELSEWHERE FROM 38N TO 57N W OF 169W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M...HIGHEST S AND SW OF LOW. .SYNOPSIS AND FORECAST. .LOW 53N165W 1004 MB MOVING SE 20 KT. WITHIN 420 NM S QUADRANT WINDS 20 TO 30 KT. SEAS 3 TO 6.5 M. ELSEWHERE FROM 34N TO 54N BETWEEN 160W AND 177W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 50N165W ABOVE. .LOW 59N145W 998 MB NEARLY STATIONARY. N OF A LINE FROM 60N149W TO 47N135W TO 43N125W WINDS LESS THAN 25 KT. SEAS 2.5 TO 5 M...HIGHEST NEAR 49N129W. .24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS AS DESCRIBED WITH COMPLEX LOW 51N128W IN WARNINGS SECTION. .FROM 35N TO 43N BETWEEN 123W AND 128W AREA OF N WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. ELSEWHERE S OF 43N BETWEEN 123W AND 150W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M. .24 HOUR FORECAST S OF 40N BETWEEN 119W AND 138W WINDS LESS THAN 25 KT. SEAS TO 3.5 M. .48 HOUR FORECAST CONDITIONS DIMINISHED. .24 HOUR FORECAST LOW NW OF AREA NEAR 64N172W 1002 MB. WITHIN 180 NM SE QUADRANT WINDS TO 25 KT. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST LOW AND CONDITIONS WELL N OF AREA. .24 HOUR FORECAST DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 90 NM N OF A LINE FROM 50N160E TO 50N167E TO 48N170E AND WITHIN 60 NM E OF A LINE FROM 64N171W TO 57N171W. .48 HOUR FORECAST DENSE FOG WITHIN 60 NM N OF A LINE FROM 53N177E TO 53N172W. .FORECASTER HYDE. 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 1200 UTC SAT OCT 18. 24 HOUR FORECAST VALID 1200 UTC SUN OCT 19. 48 HOUR FORECAST VALID 1200 UTC MON OCT 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 27N133W TO 30N129W TO 30N140W TO 17N140W TO 23N137W TO 27N133W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL. .24 HOUR FORECAST WITHIN 30N121W TO 30N138W TO 25N139W TO 24N134W TO 26N127W TO 30N121W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL. .48 HOUR FORECAST WITHIN 30N131W TO 30N140W TO 28N140W TO 29N134W TO 30N131W AND WITHIN 11N136W TO 12N137W TO 12N140W TO 09N140W TO 09N138W TO 10N136W TO 11N136W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL. .36 HOUR FORECAST WITHIN 12N119W TO 12N120W TO 12N122W TO 10N122W TO 10N121W TO 10N120W TO 12N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL. .48 HOUR FORECAST WITHIN 15N122W TO 14N124W TO 11N124W TO 10N122W TO 11N120W TO 15N122W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. .48 HOUR FORECAST WITHIN 16N95W TO 16N96W TO 15N96W TO 15N95W TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC...NE 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. CONVECTION VALID AT 1500 UTC SAT OCT 18... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH FROM THE COAST OF PANAMA NEAR 09N84W TO 1008 MB LOW PRES NEAR 13N99W TO 09N135W. ITCZ CONTINUES FROM THAT POINT TO BEYOND 08N140W. SCATTERED MODERATE TO ISOLATED STRONG N OF 09N BETWEEN 87W AND 105W. SIMILAR ACTIVITY FROM 07N TO 12N AND W OF 125W. .FORECASTER ERA. NATIONAL HURRICANE CENTER. NATIONAL WEATHER SERVICE HONOLULU HI NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 1200 UTC OCT 18 2025. 24 HOUR FORECAST VALID 1200 UTC OCT 19 2025. 48 HOUR FORECAST VALID 1200 UTC OCT 20 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 11N172E 05N168E MOVING W 10 KT. ISOLATED MODERATE TSTMS WITHIN 180 NM OF TROUGH. .24 HOUR FORECAST TROUGH 14N165E 11N163E. .48 HOUR FORECAST TROUGH MOVED W OF AREA. .FRONT 30N167E 25N160E MOVING E 10 KT. WINDS 20 TO 25 KT N OF FRONT. .24 HOUR FORECAST FRONT 30N169E 27N160E. WINDS LOWERED TO 20 KT OR LESS. .48 HOUR FORECAST WEAK FRONT 30N170W 28N167E 28N160E. .WINDS 20 KT OR LESS OVER REMAINDER FORECAST AREA. .SEAS 4 TO 5 M N OF A LINE FROM 30N161E TO 29N160E. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE FROM 30N162E 28N160E. SEAS 2.5 TO 4 M BOUNDED BY AREA 30N140W 21N140W 19N151W 27N168W 30N150W 30N140W. .24 HOUR FORECAST SEAS 2.5 TO 3.5 M N OF LINE FROM 30N171E TO 21N160E. .48 HOUR FORECAST SEAS LOWERED TO 2.5M OR LESS. .SEAS 2.5 M OR LESS OVER REMAINDER FORECAST AREA. .ITCZ 08N140W 07N150W 08N157W 06N168W. ISOLATED MODERATE TSTMS WITHIN 120 NM OF ITCZ. .SCATTERED MODERATE TSTMS FROM 26N TO 22N BETWEEN 158W TO 161W. .ISOLATED MODERATE TSTMS FROM 20N TO 14N BETWEEN 175W AND 172E. $$ .FORECASTER THOMAS. HONOLULU HI.