High Seas Forecast
Issued by NWS
Issued by NWS
487 FZPN02 KWBC 192325 HSFEPI HIGH SEAS FORECAST FOR METAREA XII NWS OCEAN PREDICTION CENTER WASHINGTON DC 2345 UTC THU SEP 19 2024 CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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). 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 1800 UTC SEP 19. 24 HOUR FORECAST VALID 1800 UTC SEP 20. 48 HOUR FORECAST VALID 1800 UTC SEP 21. .WARNINGS. ...STORM WARNING... .24 HOUR FORECAST LOW 47N156W 986 MB. WITHIN 420 NM E...AND 540 NM S QUADRANTS WINDS 25 TO 35 KT. SEAS TO 11 FT. .48 HOUR FORECAST LOW 49N174E 973 MB. WITHIN 240 NM S...AND 180 NM W SEMICIRCLES WINDS 40 TO 55 KT. SEAS 14 TO 25 FT. ELSEWHERE WITHIN AN AREA BOUNDED BY A LINE FROM 53N172E TO 48N166W TO 39N166W TO 36N171E TO 43N160E TO 50N160E TO 53N172E WINDS 25 TO 40 KT. SEAS 8 TO 18 FT...HIGHEST S OF CENTER. ...GALE WARNING... .LOW 51N165W 997 MB MOVING NE 30 KT. WITHIN AN AREA BOUNDED BY A LINE FROM 38N176E TO 45N173W TO 55N172W TO 55N150W TO 47N150W TO 38N177W TO 38N176E WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. .24 HOUR FORECAST LOW 56N146W 994 MB. WITHIN AN AREA BOUNDED BY A LINE FROM 44N157W TO 57N157W TO 60N135W TO 50N135W TO 44N157W WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. .42 HOUR FORECAST LOW 57N141W 994 MB. WITHIN 120 NM W SEMICIRCLE WINDS 30 TO 40 KT. SEAS 10 TO 16 FT. .48 HOUR FORECAST LOW 57N139W 997 MB. WITHIN 240 NM OF CENTER WINDS 25 TO 35 KT. SEAS 8 TO 14 FT...ELSEWHERE WITHIN HECATE STRAIT WINDS 20 TO 30 KT. SEAS TO 8 FT. ...GALE WARNING... .LOW 47N165E 996 MB MOVING NE 25 KT. WITHIN 360 NM S SEMICIRCLE...AND WITHIN 480 NM S QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. .24 HOUR FORECAST LOW 51N179W 990 MB. WITHIN 300 NM OF CENTER...EXCEPT WITHIN 360 NM N QUADRANT WINDS 25 TO 40 KT. SEAS 8 TO 15 FT. .48 HOUR FORECAST LOW 54N174W 994 MB. FROM 54N TO 61N BETWEEN 171E AND 167W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. .SYNOPSIS AND FORECAST. .FROM 37N TO 46N BETWEEN 124W TO 130W WINDS 20 TO 30 KT. SEAS TO 9 FT. .24 HOUR FORECAST FROM 36N TO 50N BETWEEN 123W AND 130W WINDS 20 TO 30 KT. SEAS TO 10 FT. .48 HOUR FORECAST FROM 34N TO 43N BETWEEN 123W TO 129W WINDS 20 TO 30 KT. SEAS TO 14 FT. .LOW 59N142W 1010 MB MOVING W 10 KT. FROM 51N TO 60N BETWEEN 132W AND 152W WINDS TO 25 KT. SEAS 8 TO 14 FT IN MIXED SWELL...EXCEPT SEAS TO 8 FT W OF 150W. .24 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS DIMINISHED. .LOW 55N165E 991 MB MOVING N 05 KT. WITHIN 480 NM E QUADRANT WINDS 20 TO 30 KT. SEAS TO 10 FT. .24 HOUR FORECAST LOW WELL N OF AREA. ASSOCIATED CONDITIONS DIMINISHED. .24 HOUR FORECAST NEW LOW 45N165W 1010 MB WITHIN 300 NM S OF A LINE FROM 47N155W TO LOW CENTER TO 39N175W WINDS 20 TO 30 KT. SEAS TO 11 FT. .48 HOUR FORECAST LOW 51N143W 1006 MB. WITHIN 360 NM SE...AND 480 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 53N BETWEEN 170W TO AND 150W. .24 HOUR FORECAST DENSE FOG FROM 44N TO 50N BETWEEN 165W AND 150W. .48 HOUR FORECAST DENSE FOG FROM 44N TO 48N BETWEEN 175W AND 165W. .FORECASTER BYRD. 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 1800 UTC THU SEP 19. 24 HOUR FORECAST VALID 1800 UTC FRI SEP 20. 48 HOUR FORECAST VALID 1800 UTC SAT SEP 21. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 07N96W TO 07N96.5W TO 06.5N97W TO 06.5N96.5W TO 06.5N96W TO 06.5N95.5W TO 07N96W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED S SWELL AND SW WAVES. NUMEROUS TSTMS FROM 09N TO 15N BETWEEN 93W AND 100W. .24 HOUR FORECAST LOW PRES NEAR 13N109W 1008 MB. WITHIN 12N104W TO 11N107W TO 12N108W TO 13N106W TO 12N104W SW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. .48 HOUR FORECAST LOW PRES NEAR 14N108W 1009 MB. WITHIN 13N106W TO 12N107W TO 10N110W TO 12N113W TO 13N112W TO 14N108W TO 13N106W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. .TROPICAL WAVE ALONG 119W FROM 04N TO 20N. WITHIN 10N108W TO 08N117W TO 09N117W TO 09N112W TO 10N108W S TO SW WINDS 20 TO 25 KT. SEAS 8 FT. .18 HOUR FORECAST LOW PRES NEAR 11N118W 1008 MB. LITTLE CHANGE. .24 HOUR FORECAST LOW PRES NEAR 12N117W 1007 MB. WITHIN 09N114W TO 08N118W TO 10N119W TO 11N118W TO 12N115W TO 09N114W SW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. .48 HOUR FORECAST LOW PRES NEAR 13N118W 1008 MB. WITHIN 10N114W TO 09N116W TO 09N118W TO 10N119W TO 12N116W TO 11N115W TO 10N114W SW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. .48 HOUR FORECAST WITHIN 06N82W TO 05N86W TO 06N90W TO 07N90W TO 08N86W TO 06N82W SW WINDS 20 TO 25 KT. SEAS TO 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 2000 UTC THU SEP 19... .TROPICAL WAVE ALONG 86W N OF 05N...SCATTERED MODERATE TO STRONG WITHIN 180 NM E OF WAVE FROM 06N TO 10N AND WITHIN 60 NM W OF FROM 07N TO 10N. .SCATTERED MODERATE WITHIN 30 NM OF 15N109W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH EXTENDS FROM 10N75W TO 11N86W TO 12N102W TO 10N119W TO 09N125W TO 10N140W. NUMEROUS MODERATE TO STRONG FROM 10N TO 14N BETWEEN 91W AND 97W. SCATTERED MODERATE ISOLATED STRONG FROM 03N TO 09N BETWEEN 77W AND 83W...WITHIN 60 NM OF THE TROUGH BETWEEN 123W AND 126W AND WITHIN 60 NM S OF THE TROUGH BETWEEN 126W AND 131W. SCATTERED MODERATE WITHIN 60 NM EITHER SIDE OF THE TROUGH W OF 135W. .FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER. NATIONAL WEATHER SERVICE HONOLULU HI NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 1800 UTC SEP 19 2024. 24 HOUR FORECAST VALID 1800 UTC SEP 20 2024. 48 HOUR FORECAST VALID 1800 UTC SEP 21 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 30N171W 26N172W MOVING W SLOWLY. WINDS 20 TO 25 KT N OF 27N BETWEEN 171W AND 163W. ISOLATED MODERATE TSTMS N OF 26N BETWEEN 170W AND 163W. .24 HOUR FORECAST TROUGH 30N175W 25N176W. .48 HOUR FORECAST TROUGH 30N179E 25N176E. .TROUGH 21N174W 17N179E MOVING W SLOWLY. ISOLATED MODERATE TSTMS FROM 22N TO 18N BETWEEN 173W AND 169W. .24 HOUR FORECAST TROUGH DISSIPATED. .24 HOUR FORECAST NEW TROUGH 17N175W 13N179E 11N177E. .48 HOUR FORECAST NEW LOW NEAR 13N177E 1009 MB. TROUGHS FROM 19N178E TO LOW AND FROM LOW TO 11N175E. .24 HOUR FORECAST NEW TROUGH 30N147W 26N141W. .48 HOUR FORECAST TROUGH 30N153W 25N150W. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .ITCZ 08N140W 09N148W 06N155W...AND 14N162W 14N170W 08N173E 09N167E. ISOLATED MODERATE TO STRONG TSTMS WITHIN 240 NM OF ITCZ. .OTHERWISE ISOLATED MODERATE TSTMS FROM 14N TO 11N BETWEEN 161E AND 167E...AND FROM 05N TO 02N W OF 162E. $$ .FORECASTER TROTTER. HONOLULU HI.