High Seas Forecast
Issued by NWS
Issued by NWS
220 FZPN02 KWBC 261125 HSFEPI HIGH SEAS FORECAST FOR METAREA XII NWS OCEAN PREDICTION CENTER WASHINGTON DC 1145 UTC THU SEP 26 2024 CCODE/2:31:12:11:00/AOW+POR+AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 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 0600 UTC SEP 26. 24 HOUR FORECAST VALID 0600 UTC SEP 27. 48 HOUR FORECAST VALID 0600 UTC SEP 28. .WARNINGS. ...HURRICANE FORCE WIND WARNING... .LOW 48N146W 983 MB MOVING NE 30 KT. FROM 43N TO 49N BETWEEN 146W AND 153W WINDS 40 TO 55 KT. SEAS 12 TO 20 FT. ELSEWHERE FROM 38N TO 50N BETWEEN 136W AND 161W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT. .12 HOUR FORECAST LOW 50N138W 973 MB. WITHIN 180 NM W AND SW QUADRANTS WINDS 50 TO 65 KT. SEAS 16 TO 28 FT. .24 HOUR FORECAST LOW 53N131W 983 MB. WITHIN 180 NM OF LOW EXCEPT 240 NM S QUADRANT WINDS 40 TO 55 KT. SEAS 15 TO 30 FT. ELSEWHERE FROM 45N TO 56N E OF 140W WINDS 25 TO 40 KT. SEAS 8 TO 20 FT...HIGHEST SW OF THE LOW. .48 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED CONDITIONS DIMINISHED. ...STORM WARNING... .LOW W OF AREA 37N148E 1008 MB MOVING NE 30 KT. FROM 35N TO 41N BETWEEN 174E AND 160E WINDS 20 TO 30 KT. SEAS TO 12 FT. .24 HOUR FORECAST LOW 40N160E 1003 MB. WITHIN 180 NM N AND NE QUADRANTS WINDS 35 TO 50 KT. SEAS 12 TO 18 FT. ELSEWHERE FROM 33N TO 44N BETWEEN 177E AND 160E WINDS 25 TO 40 KT. SEAS 8 TO 16 FT. .48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 40N177E 1004 MB. FROM 37N TO 41N BETWEEN 170W AND 175E WINDS 35 TO 50 KT. SEAS 11 TO 22 FT. ELSEWHERE FROM 32N TO 43N BETWEEN 167W AND 161E WINDS 25 TO 40 KT. SEAS 8 TO 16 FT. ...GALE WARNING... .LOW NW OF AREA 60N177E 994 MB MOVING SE 20 KT. WITHIN 360 NM S QUADRANT WINDS 25 TO 35 KT. SEAS 10 TO 15 FT. ELSEWHERE N OF 48N W OF 170W WINDS 20 TO 30 KT. SEAS TO 12 FT. .24 HOUR FORECAST LOW 56N173W 998 MB. WITHIN 360 NM SW AND N QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 16 FT. ELSEWHERE N OF 46N BETWEEN 160W AND 174E WINDS 20 TO 30 KT. SEAS TO 12 FT. .48 HOUR FORECAST LOW 55N160W 1001 MB. WITHIN 360 NM SW QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 16 FT. ELSEWHERE N OF 45N BETWEEN 150W AND 172W WINDS 20 TO 30 KT. SEAS TO 12 FT. ...GALE WARNING... .LOW 58N148W 988 MB MOVING SE 10 KT. N OF 50N WITHIN 600 NM SW QUADRANT WINDS 20 TO 30 KT. SEAS TO 11 FT. .24 HOUR FORECAST LOW 56N146W 1002 MB. WITHIN 360 NM SW SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. .48 HOUR FORECAST LOW DISSIPATED. N OF 53N E OF 141W WINDS TO 25 KT. SEAS TO 9 FT. .SYNOPSIS AND FORECAST. .24 HOUR FORECAST FROM 34N TO 41N BETWEEN 128W AND 122W WINDS TO 25 KT. SEAS TO 11 FT. .48 HOUR FORECAST FROM 32N TO 47N BETWEEN 123W AND 130W WINDS 20 TO 30 KT. SEAS 8 TO 15 FT WITH NW SWELL. .48 HOUR FORECAST LOW 59N178W 1008 MB. WITHIN 300 NM S AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 10 FT. .RESUSPENDED ASH IS OCCURRING FROM SHEVELUCH VOLCANO AT POSITION 56.7N161.4E ON KAMCHATKA ISLAND. TRACE AMOUNTS OF ASHFALL MAY DRIFT E AND REACH THE SURFACE. IF MARINERS ENCOUNTER VOLCANIC ASH OF FLOATING VOLCANIC DEBRIS PLEASE REPORT THE OBSERVATION TO THE OCEAN PREDICTION CENTER BY CALLING 301-683-1520. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 51N BETWEEN 136W AND 148W. .24 HOUR FORECAST DENSE FOG WITHIN 120 NM EITHER SIDE OF A LINE FROM 61N166W TO 58N178W. .48 HOUR FORECAST DENSE FOG FROM 58N TO 62N E OF 170W AND FROM 36N TO 41N BETWEEN 166W AND 172W. .FORECASTER COLLINS. 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 SEP 26. 24 HOUR FORECAST VALID 0600 UTC FRI SEP 27. 48 HOUR FORECAST VALID 0600 UTC SAT SEP 28. .WARNINGS. ...HURRICANE WARNING... .TROPICAL STORM JOHN NEAR 17.1N 102.5W 982 MB AT 0900 UTC SEP 26 MOVING WNW OR 285 DEG AT 3 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NE QUADRANT...120 NM SE QUADRANT...60 NM SW QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 0 NM NE QUADRANT...330 NM SE QUADRANT...240 NM SW QUADRANT...AND 30 NM NW QUADRANT WITH SEAS TO 19 FT. ELSEWHERE WITHIN 16N98W TO 19N104W TO 14N109W TO 12N113W TO 10N109W TO 11N101W TO 16N98W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 20N105W TO 27N116W TO 20N112W TO 11N116W TO 08N107W TO 11N87W TO 20N105W...INCLUDING NEAR CABO CORRIENTES AND THE GULF OF TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL. .12 HOUR FORECAST HURRICANE JOHN NEAR 17.2N 102.6W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. .24 HOUR FORECAST HURRICANE JOHN NEAR 17.8N 103.0W. MAXIMUM SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N SEMICIRCLE...150 NM SE QUADRANT AND 120 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 420 NM SW QUADRANT...380 NM SE QUADRANT...105 NM NW QUADRANT...AND 60 NM NE QUADRANT WITH SEAS TO 24 FT. ELSEWHERE WITHIN 17N99W TO 19N104W TO 11N112W TO 10N103W TO 13N99W TO 17N99W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 17N107W TO 19N105W TO 30N115W TO 10N116W TO 08N103W TO 13N90W TO 17N107W...INCLUDING NEAR CABO CORRIENTES AND SEBASTIAN VIZCAINO BAY AND THE GULF OF TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL. .36 HOUR FORECAST TROPICAL STORM JOHN NEAR 18.8N 103.6W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. .48 HOUR FORECAST TROPICAL DEPRESSION JOHN NEAR 19.7N 104.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR GREATER WITHIN 400 NM IN SE QUADRANT WITH SEAS TO 12 FT. ELSEWHERE WITHIN 13N98W TO 14N100W TO 14N103W TO 12N104W TO 11N102W TO 11N99W TO 13N98W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 15N93W TO 20N107W TO 27N114W TO 22N119W TO 10N116W TO 09N96W TO 15N93W...INCLUDING NEAR CABO CORRIENTES AND THE GULF OF TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .SYNOPSIS AND FORECAST. .WITHIN 30N128W TO 30N140W TO 21N140W TO 30N128W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL. .24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .06 HOUR FORECAST WITHIN 12N127W TO 12N131W TO 10N130W TO 10N128W TO 11N127W TO 12N127W WINDS 20 KT OR LESS. SEAS 8 FT IN S TO SW SWELL. .24 HOUR FORECAST WITHIN 13N125W TO 13N129W TO 12N131W TO 11N131W TO 11N129W TO 12N125W TO 13N125W WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL. .48 HOUR FORECAST WITHIN 12N125W TO 13N126W TO 12N127W TO 11N127W TO 11N125W TO 12N125W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 0900 UTC THU SEP 26... .TROPICAL STORM JOHN...NUMEROUS MODERATE TO STRONG FROM 12N TO 19N BETWEEN 98W AND 108W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH EXTENDS FROM 13N110W TO 12N127W TO BEYOND 10N140W. SCATTERED MODERATE FROM 08N TO 14N BETWEEN 110W AND 140W. .FORECASTER AREINHART. NATIONAL HURRICANE CENTER. NATIONAL WEATHER SERVICE HONOLULU HI NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 0600 UTC SEP 26 2024. 24 HOUR FORECAST VALID 0600 UTC SEP 27 2024. 48 HOUR FORECAST VALID 0600 UTC SEP 28 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .FIRST LOW NEAR 14N172W 1010 MB. SECOND LOW NEAR 07N171E 1008 MB. TROUGH 21N168W TO FIRST LOW TO 12N174W 09N176E 08N174E TO SECOND LOW TO 05N168E. LOWS AND TROUGH MOVING NW SLOWLY. ISOLATED MODERATE TSTMS WITHIN 60 NM OF LOWS AND TROUGH. .24 HOUR FORECAST FIRST LOW DISSIPATED. SECOND LOW NEAR 07N169E 1011MB. TROUGH 21N173W 12N175W 11N176W TO SECOND LOW TO 03N166E. .48 HOUR FORECAST SECOND LOW NEAR 07N163E. TROUGH 12N172E TO SECOND LOW TO 03N161E. .24 HOUR FORECAST NEW TROUGH 12N160W 06N162W 03N167W .48 HOUR FORECAST TROUGH 14N166W 05N170W. .WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA. .SEAS 8 TO 9 FT N OF LINE 30N144W 17N153W 17N160W 13N156W 14N148W 21N140W. .24 HOUR FORECAST SEAS SUBSIDE 8 FT OR LESS. .SEAS 8 FT OR LESS OVER REMAINDER FORECAST AREA. .MONSOON TROUGH 10N140W 10N158W 13N165W. ISOLATED MODERATE TSTMS WITHIN 120 NM OF EITHER SIDE OF TROUGH. .ISOLATED MODERATE TSTMS FROM 13N TO 23N W OF 163E...N OF 22N BETWEEN 176W AND 163W...AND M 12N TO 20N BETWEEN 163W AND 155W. $$ .FORECASTER PIERCE. HONOLULU HI.