High Seas Forecast
Issued by NWS
Issued by NWS
950 FZPN02 KWBC 201125 HSFEPI HIGH SEAS FORECAST FOR METAREA XII NWS OCEAN PREDICTION CENTER WASHINGTON DC 1145 UTC THU NOV 20 2025 CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0600 UTC NOV 20. 24 HOUR FORECAST VALID 0600 UTC NOV 21. 48 HOUR FORECAST VALID 0600 UTC NOV 22. .WARNINGS. ...STORM WARNING... .LOW 56N159W 951 MB MOVING NE 15 KT. WITHIN 300 NM SE SEMICIRCLE WINDS 45 TO 60 KT. SEAS 6 TO 10 M. ALSO FROM 38N TO 58N BETWEEN 143W AND 167W WINDS 30 TO 45 KT. SEAS 4 TO 8.5 M IN MIXED SWELL...EXCEPT SEAS TO 4 M WITHIN 240 NM NW QUADRANT. ELSEWHERE S OF THE ALEUTIAN ISLANDS N OF 35N BETWEEN 143W AND 170W WINDS 20 TO 30 KT. SEAS 3 TO 6 M. .12 HOUR FORECAST LOW 58N155W 952 MB. WITHIN 300 NM SE AND S QUADRANTS WINDS 40 TO 55 KT. SEAS 7 TO 10.5 M. .24 HOUR FORECAST LOW 59N151W 962 MB. WITHIN 1020 NM SE AND 1200 NM SW QUADRANTS...AND WITHIN THE BERING SEA E OF 178E WINDS 25 TO 40 KT. SEAS 4 TO 8.5 M...HIGHEST NEAR 57N147W AND 48N162W...EXCEPT SEAS 3 TO 5.5 M WITHIN THE BERING SEA. ELSEWHERE N OF 40N E OF 173E...INCLUDING WITHIN THE BERING SEA...AND S OF 40N BETWEEN 145W AND 173E WINDS TO 25 KT. SEAS 3 TO 6 M...EXCEPT SEAS 2.5 TO 4 M WITHIN THE BERING SEA. .48 HOUR FORECAST LOW 61N149W 992 MB. BETWEEN 240 NM AND 780 NM S AND W SEMICIRCLES WINDS 25 TO 35 KT. SEAS 3.5 TO 6.5 M...HIGHEST NEAR 52N142W. ELSEWHERE FROM 34N TO 59N BETWEEN 126W AND 172W WINDS TO 25 KT. SEAS 3 TO 4.5 M. ...STORM WARNING... .LOW 51N179E 975 MB MOVING E 35 KT. WITHIN 480 NM SE QUADRANT AND 360 NM SW SEMICIRCLE WINDS 40 TO 55 KT. SEAS 6 TO 9.5 M...HIGHEST NEAR 46N180W. ALSO FROM 40N TO 51N BETWEEN 165W AND 180W...AND N OF 40N W OF 180W WINDS 25 TO 40 KT. SEAS 4 TO 8.5 M IN MIXED SWELL. ELSEWHERE S OF 40N W OF 170W WINDS TO 25 KT. SEAS 3 TO 7 M...HIGHEST ALONG 40N. .24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS DESCRIBED WITH LOW 59N151W ABOVE. ...GALE WARNING... .COMPLEX LOW WITH FIRST CENTER 58N148W 977 MB MOVING NE 10 KT AND SECOND CENTER 52N135W 991 MB MOVING NE 15 KT. FROM 38N TO 54N BETWEEN 127W AND 140W...AND WITHIN 120 NM N AND E OF A FRONT FROM FIRST CENTER TO 50N150W TO 59N144W TO 55N136W TO 46N126W WINDS 25 TO 40 KT. SEAS 4 TO 8.5 M...HIGHEST S OF FIRST CENTER. ELSEWHERE N OF 32N BETWEEN 122W AND 143W...AND NE OF A LINE FROM 40N140W TO 57N153W WINDS TO 25 KT. SEAS 2.5 TO 5 M. .24 HOUR FORECAST SECOND CENTER DISSIPATED INLAND. FIRST CENTER AND ASSOCIATED CONDITIONS DESCRIBED WITH LOW 59N151W ABOVE. ...GALE WARNING... .LOW 62N169W 967 MB MOVING S 10 KT. WITHIN 240 NM N QUADRANT AND 180 NM W SEMICIRCLE WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M...HIGHEST W AND SW OF CENTER. ELSEWHERE NW OF A LINE FROM 53N180W TO 61N167W WINDS 20 TO 30 KT. SEAS 2.5 TO 5.5 M IN NE SWELL. .24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS DESCRIBED WITH LOW 59N151W ABOVE. ...GALE WARNING... .18 HOUR FORECAST NEW LOW JUST W OF AREA 36N157E 1010 MB. WITHIN 480 NM E SEMICIRCLE WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M. .24 HOUR FORECAST LOW JUST W OF AREA 37N159E 1006 MB. WITHIN 420 NM E AND 540 NM SE QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. .48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER NEAR 46N164E 996 MB AND SECOND CENTER NEAR 41N169E 998 MB. FROM 33N TO 50N W OF 180W WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M. ...GALE WARNING... .30 HOUR FORECAST LOW NW OF AREA NEAR 55N154E 982 MB. WITHIN 600 NM SE QUADRANT WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M. .48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NW OF AREA NEAR 51N158E 978 MB. N OF 47N W OF 176E WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. ...HEAVY FREEZING SPRAY WARNING... .MODERATE TO HEAVY FREEZING SPRAY N OF 61N W OF 170W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE FROM 55N175E TO 64N165W. .24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 61N W OF 170W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 58N W OF 162W. .48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 62N W OF 167W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 59N W OF ALASKA. .SYNOPSIS AND FORECAST. .LOW 39N124W 1014 MB MOVING SW 15 KT. WITHIN 540 NM SW AND W QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M. .24 HOUR FORECAST LOW 34N119W 1009 MB. S OF 40N E OF 134W WINDS 20 TO 30 KT. SEAS 3.5 TO 5.5 M IN NW SWELL. .48 HOUR FORECAST LOW S OF AREA NEAR 29N118W 1008 MB. WITHIN 720 NM NW QUADRANT WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 57N E OF 152W...AND N OF 50N W OF 151W. .24 HOUR FORECAST DENSE FOG N OF 54N E OF 160W...AND N OF 54N WITHIN THE BERING SEA. .48 HOUR FORECAST DENSE FOG N OF 53N BETWEEN 148W AND 175W...AND N OF 42N W OF 168E. .FORECASTER ANDERSON. 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 THU NOV 20. 24 HOUR FORECAST VALID 0600 UTC FRI NOV 21. 48 HOUR FORECAST VALID 0600 UTC SAT NOV 22. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .COLD FRONT FROM 30N133W TO 30N140W. WITHIN 29N118W TO 30N130W TO 24N128W TO 23N123W TO 26N117W TO 29N118W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW TO N SWELL. .24 HOUR FORECAST COLD FRONT FROM 30N120W TO 24N130W TO 25N140W. N OF FRONT...WITHIN 30N120W TO 30N128W TO 29N136W TO 27N137W TO 27N128W TO 28N123W TO 30N120W NW TO N WINDS 20 TO 25 KT...EXCEPT N TO NE WINDS 20 TO 25 KT BETWEEN 129W AND 133W. SEAS 2.5 TO 3.5 M IN NW TO N SWELL. ELSEWHERE N OF FRONT...WITHIN 30N120W TO 29N133W TO 30N140W TO 26N140W TO 27N130W TO 28N122W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN NW SWELL. .48 HOUR FORECAST LOW PRES NEAR 30N117W 1010 MB WITH ASSOCIATED COLD FRONT TO 23N120W AND WEAKENING TO 22N130W TO 20N140W. N OF FRONT...WITHIN 30N120W TO 30N131W TO 29N123W TO 28N130W TO 26N125W TO 30N120W WINDS 20 KT OR LESS. SEAS 4 TO 4.5 M IN NW SWELL. ELSEWHERE N OF FRONT...WITHIN 30N116W TO 30N140W TO 20N140W TO 22N123W TO 24N120W TO 30N116W...INCLUDING SEBASTIAN VIZCAINO BAY...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN NW SWELL. .WITHIN 19N136W TO 20N137W TO 21N140W TO 14N140W TO 13N132W TO 18N131W TO 19N136W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M. ELSEWHERE WITHIN 20N125W TO 21N140W TO 08N140W TO 16N126W TO 20N125W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN N TO NE SWELL. .24 HOUR FORECAST WITHIN 20N136W TO 20N140W TO 13N140W TO 13N133W TO 14N135W TO 20N136W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M. ELSEWHERE WITHIN 16N119W TO 19N123W TO 26N140W TO 14N135W TO 07N140W TO 08N129W TO 16N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN N SWELL. .48 HOUR FORECAST WITHIN 15N122W TO 20N133W TO 20N140W TO 05N140W TO 10N125W TO 15N122W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN N SWELL. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. CONVECTION VALID AT 0915 UTC THU NOV 20... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH AXIS EXTENDS FROM 08N78W TO 09.5N90W TO 08N103W TO 07N110W TO 08N117W. THE ITCZ AXIS EXTENDS FROM 08N117W TO 09N124W TO 08N130W TO 08N140W. SCATTERED MODERATE TO STRONG FROM 03N TO 07N BETWEEN 78W AND 81W. SCATTERED MODERATE WITHIN 30 NM OF THE ITCZ W OF 134W. .FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER. NATIONAL WEATHER SERVICE HONOLULU HI NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 0600 UTC NOV 20 2025. 24 HOUR FORECAST VALID 0600 UTC NOV 21 2025. 48 HOUR FORECAST VALID 0600 UTC NOV 22 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .FRONT 30N175E 28N169E 28N163E 28N160E MOVING E 10 KT. .24 HOUR FORECAST FRONT 30N179E 28N171E 30N164E. .48 HOUR FORECAST FRONT DISSIPATED. .TROUGH 30N164W 22N174W 19N179W MOVING W 15 KT. ISOLATED MODERATE TSTMS WITHIN 120 NM OF TROUGH. .24 HOUR FORECAST TROUGH 28N171W 22N179E 21N172E. .48 HOUR FORECAST TROUGH DISSIPATED. .24 HOUR FORECAST NEW FRONT 30N163E 28N160E. .48 HOUR FORECAST FRONT 30N171E 28N165E. .WINDS 20 TO 30 KT IN AREA BOUNDED BY 21N160E 24N173E 25N172W 16N178E 10N160E 21N160E. WINDS 20 TO 25 KT FROM 26N TO 09N E OF 162W. .24 HOUR FORECAST WINDS 20 TO 25 KT FROM 24N TO 12N W OF 178E...AND FROM 25N TO 06N E OF 164W. .48 HOUR FORECAST WINDS 20 TO 25 KT FROM 18N TO 09N E OF 150W. .WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 2.5 TO 4 M N OF LINE 07N160E 08N172E 11N167E 07N164W 08N140W...EXCEPT AREA BOUNDED BY 25N160E 30N175E 30N174W 21N160E 25N160E. .24 HOUR FORECAST SEAS 2.5 TO 4 M N OF 06N EXCEPT N OF 21N BETWEEN 176W AND 165W. .48 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 07N160E 10N168E 07N172E 11N171W 06N164W 01N151W 04N140W...EXCEPT N OF LINE 30N174E 25N160E. .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .ITCZ 07N140W 09N159W 10N174W 10N170E 09N160E. SCATTERED MODERATE TSTMS WITHIN 240 NM OF ITCZ E OF 175W...AND FROM 12N TO 02N W OF 170E. $$ .FORECASTER PIERCE. HONOLULU HI.