High Seas Forecast
Issued by NWS
Issued by NWS
855 FZPN01 KWBC 211552 HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 1630 UTC SAT SEP 21 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM). THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL OCTOBER 16 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND GRAPHICAL PRODUCTS FOR THE HIGH SEAS AREAS ONLY. TO LEARN MORE PLEASE VISIT (WEB ADDRESS LOWERCASE) HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH PACIFIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 12 FEET OR GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH, AND ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO PRESERVE CONTINUITY WHERE APPROPRIATE. 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 SEP 21. 24 HOUR FORECAST VALID 1200 UTC SEP 22. 48 HOUR FORECAST VALID 1200 UTC SEP 23. .WARNINGS. ...STORM WARNING... .LOW 48N170E 972 MB MOVING NE 40 KT. WITHIN 360 NM S AND SW QUADRANTS WINDS 40 TO 55 KT. SEAS 18 TO 30 FT. ELSEWHERE WITHIN 840 NM SE...600 NM W AND SW...240 NM N...AND 420 NM NE QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 20 FT. .24 HOUR FORECAST LOW 52N166W 972 MB. WITHIN 420 NM SE AND 540 NM SW QUADRANTS WINDS 35 TO 50 KT. SEAS 16 TO 28 FT. ELSEWHERE WITHIN 960 NM S AND SE...780 NM W AND NW...AND 660 NM NE QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 20 FT. .48 HOUR FORECAST LOW 56N151W 974 MB. WITHIN 480 NM N AND NE...840 NM SE...AND 960 NM S AND SW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 24 FT. ELSEWHERE WITHIN 720 NM W AND NW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 14 FT. ...GALE WARNING... .LOW 56N138W 991 MB MOVING NE 10 KT. WITHIN 180 NM NW SEMICIRCLE...540 NM S QUADRANT...AND 360 NM E QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. .24 HOUR FORECAST LOW 57N136W 1004 MB. WINDS LESS THAN 25 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST LOW DISSIPATED. ...GALE WARNING... .LOW 53N179W 932 MB DRIFTING NW. WITHIN 420 NM N SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE WITHIN 420 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS 8 TO 14 FT. .24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 52N166W. ...GALE WARNING... .LOW 50N151W 1006 MB MOVING NE 30 KT. WITHIN 420 NM SE SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 12 FT. ELSEWHERE WITHIN 240 NM E AND SE OF A LINE FROM LOW CENTER TO 44N158W TO 41N165W WINDS 20 TO 30 KT. SEAS TO 10 FT. .24 HOUR FORECAST LOW 53N134W 1006 MB. WITHIN 480 NM S AND SE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT. .48 HOUR FORECAST LOW DISSIPATED INLAND. CONDITIONS DIMINISHED. ...GALE WARNING... .FROM 38N TO 42N E OF 127W WINDS 25 TO 35 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 35N TO 44N BETWEEN 124W AND 129W WINDS 20 TO 30 KT. SEAS TO 10 FT. .24 HOUR FORECAST FROM 32N TO 43N BETWEEN 124W AND 129W WINDS 20 TO 30 KT. SEAS TO 12 FT. .48 HOUR FORECAST FROM 32N TO 43N BETWEEN 124W AND 129W WINDS 20 TO 30 KT. SEAS TO 11 FT. ...GALE WARNING... .48 HOUR FORECAST LOW 42N160E 1002 MB. FROM 35N TO 46N W OF 172E WINDS 25 TO 35 KT. SEAS TO 12 FT. .SYNOPSIS AND FORECAST. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 51N BETWEEN 138W AND 160W. .24 HOUR FORECAST DENSE FOG FROM 46N TO 52N BETWEEN 142W AND 158W. .48 HOUR FORECAST VSBY IMPROVED. .FORECASTER ACHORN. 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 SEP 21. 24 HOUR FORECAST VALID 1200 UTC SUN SEP 22. 48 HOUR FORECAST VALID 1200 UTC MON SEP 23. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 14N108W TO 15N108W TO 15N110W TO 14N111W TO 13N111W TO 13N108W TO 14N108W WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL. .24 HOUR FORECAST WITHIN 13N109W TO 15N112W TO 14N113W TO 12N113W TO 11N111W TO 12N109W TO 13N109W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. .48 HOUR FORECAST WITHIN 14N110W TO 14N111W TO 13N112W TO 11N112W TO 11N110W TO 14N110W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE WITHIN 11N97W TO 13N105W TO 14N110W TO 11N109W TO 10N105W TO 07N97W TO 11N97W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN W SWELL. .06 HOUR FORECAST WITHIN 12N137W TO 12N139W TO 12N140W TO 10N140W TO 10N138W TO 11N137W TO 12N137W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN SE TO S SWELL. .18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 1500 UTC SAT SEP 21... .TROPICAL WAVE ALONG 109W...1006 MB LOW PRES IS WITHIN THE WAVE...CENTERED NEAR 15N109W. SCATTERED MODERATE FROM 10N TO 17N BETWEEN 107W AND 112W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH FROM 13N88W TO 1006 MB LOW PRES NEAR 13N109W TO 10N140W. SCATTERED MODERATE WITHIN 150 NM ON EITHER SIDE OF THE BOUNDARY. .FORECASTER ERA. NATIONAL HURRICANE CENTER. $$