High Seas Forecast
Issued by NWS
Issued by NWS
336 FZPN01 KWBC 240932 HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 1030 UTC TUE SEP 24 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0600 UTC SEP 24. 24 HOUR FORECAST VALID 0600 UTC SEP 25. 48 HOUR FORECAST VALID 0600 UTC SEP 26. .WARNINGS. ...STORM WARNING... .LOW 45N172E 1003 MB MOVING E 40 KT. FROM 36N TO 49N W OF 171W WINDS 25 TO 35 KT. SEAS 8 TO 15 FT. .24 HOUR FORECAST LOW 46N166W 1000 MB. FROM 38N TO 50N BETWEEN 155W AND 177E WINDS 25 TO 40 KT. SEAS 8 TO 17 FT. ELSEWHERE FROM 38N TO 47N BETWEEN 177E AND 167E WINDS LESS THAN 25 KT. SEAS TO 11 FT. .48 HOUR FORECAST LOW 49N145W 985 MB. FROM 42N TO 49N BETWEEN 148W AND 151W WINDS 40 TO 55 KT. SEAS 12 TO 21 FT. ELSEWHERE FROM 37N TO 50N BETWEEN 134W AND 162W WINDS 25 TO 40 KT. SEAS 8 TO 20 FT. ALSO FROM 38N TO 50N BETWEEN 132W AND 180W WINDS LESS THAN 25 KT. SEAS 8 TO 14 FT. ...GALE WARNING... .LOW 59N146W 981 MB MOVING W 05 KT. WITHIN 180 NM N...480 NM E...1080 NM S...AND 840 NM W QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 21 FT...HIGHEST NEAR 55N142W. ELSEWHERE N OF A LINE FROM 30N171W TO 31N159W TO 48N125W WINDS LESS THAN 25 KT. SEAS TO 12 FT. .24 HOUR FORECAST LOW 58N150W 990 MB. WITHIN 780 NM S AND 540 NM W QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE N OF 60N BETWEEN ALASKA COAST AND 170W...WITHIN 360 NM NE QUADRANT...AND 120 NM NW OF FRONT FROM 50N127W TO 41N133W WINDS 20 TO 30 KT. SEAS TO 11 FT. ALSO N OF 30N BETWEEN 124W AND 160W WINDS LESS THAN 25 KT. SEAS TO 12 FT. .48 HOUR FORECAST LOW 57N150W 993 MB. FROM 50N TO 60N BETWEEN 148W AND 167W WINDS 25 TO 35 KT. SEAS TO 11 FT. ELSEWHERE WITHIN 540 NM NE SEMICIRCLE WINDS LESS THAN 25 KT. SEAS TO 8 FT. ...GALE WARNING... .24 HOUR FORECAST LOW NW OF AREA 62N168E 1002 MB. N OF 49N W OF 172E W TO SW WINDS TO 25 KT. SEAS TO 8 FT. .48 HOUR FORECAST LOW NW OF AREA 60N177E 996 MB. WITHIN 360 NM S QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE N OF 48N W OF 171W WINDS 20 TO 30 KT. SEAS TO 11 FT. .SYNOPSIS AND FORECAST. .FROM 31N TO 44N BETWEEN 124W AND 132W AREA OF N WINDS TO 25 KT. SEAS TO 10 FT. .24 HOUR FORECAST CONDITIONS DESCRIBED IN SECOND WARNING ABOVE. .48 HOUR FORECAST EXCEPT WHERE DESCRIBED ABOVE...FROM 31N TO 54N E OF 142W WINDS LESS THAN 25 KT. SEAS TO 10 FT. .24 HOUR FORECAST FROM 36N TO 41N W OF 176E AREA OF NE TO E WINDS 20 TO 30 KT. SEAS TO 10 FT. .48 HOUR FORECAST FROM 36N TO 44N W OF 177W AREA OF E WINDS 20 TO 30 KT. SEAS TO 11 FT. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 41N TO 47N BETWEEN 174W AND 169E AND N OF 48N E OF 126W. .24 HOUR FORECAST DENSE FOG FROM 34N TO 42N BETWEEN 122W AND 127W AND FROM 48N TO 51N E OF 128W. .48 HOUR FORECAST CONDITIONS IMPROVING. .FORECASTER JOSEPH. OCEAN PREDICTION CENTER. NWS NATIONAL HURRICANE CENTER MIAMI FL 1030 UTC TUE SEP 24 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. 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 SECURITE E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE EQUATOR E OF 120W SYNOPSIS VALID 0600 UTC TUE SEP 24. 24 HOUR FORECAST VALID 0600 UTC WED SEP 25. 48 HOUR FORECAST VALID 0600 UTC THU SEP 26. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM JOHN JUST INLAND NEAR 17.3N 100.0W 990 MB AT E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE EQUATOR E OF 120W SYNOPSIS VALID 0600 UTC TUE SEP 24. 24 HOUR FORECAST VALID 0600 UTC WED SEP 25. 48 HOUR FORECAST VALID 0600 UTC THU SEP 26. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM JOHN JUST INLAND NEAR 17.3N 100.0W 990 MB AT 0900 UTC SEP 24 MOVING NW OR 310 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM N SEMICIRCLE AND 40 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 90 NM SE QUADRANT WITH SEAS TO 16 FT. ELSEWHERE OVER FORECAST WATERS WITHIN 240 NM SE AND 360 NM SW QUADRANTS OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO 14 FT. FROM 09N TO 13N BETWEEN 96W AND 100W AND FROM 09N TO 11N BETWEEN 100W AND 113W SW TO W WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. FROM 06N TO 09N BETWEEN 93W AND 100W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW TO N SWELL. .12 HOUR FORECAST TROPICAL DEPRESSION JOHN INLAND NEAR 17.4N 100.8W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER FORECAST WATERS FROM 09N TO 16N BETWEEN 95W AND 102W SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT...EXCEPT 11 TO 14 FT FROM 11N TO 16N BETWEEN 97W AND 102W. FROM 08N TO 14N BETWEEN 102W AND 115W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. FROM 07N TO 09N BETWEEN 90W AND 100W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW TO N SWELL. .24 HOUR FORECAST TROPICAL DEPRESSION JOHN OVER WATER NEAR 17.0N 101.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. FROM 09N TO 16N BETWEEN 95W AND 102W SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT...EXCEPT 11 TO 16 FT FROM 11N TO 16N BETWEEN 97W AND 102W. FROM 08N TO 13N BETWEEN 102W AND 118W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. FROM 07N TO 09N BETWEEN 88W AND 102W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW TO N SWELL. .48 HOUR FORECAST TROPICAL DEPRESSION JOHN NEAR 16.9N 100.6W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. LITTLE CHANGE. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 0845 UTC TUE SEP 24... .TROPICAL STORM JOHN...NUMEROUS STRONG WITHIN 120 NM NE QUADRANT...210 SE QUADRANT...150 NM SW QUADRANT AND 60 NM NW QUADRANT. .NUMEROUS STRONG FROM 15N TO 18N BETWEEN 101W AND 105W AND N OF 10N BETWEEN 85W AND 89W. .SCATTERED MODERATE TO ISOLATED STRONG FROM 11N TO 13N BETWEEN 89W AND 93W AND FROM 20N TO 22N BETWEEN 105W AND 106W. .SCATTERED MODERATE FROM 12N TO 14N BETWEEN 93W AND 97W AND FROM 06N TO 09N BETWEEN 88W AND 92W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH AXIS EXTENDS FROM 14N108W TO 14N121W TO 10N130W TO 12N140W. SCATTERED MODERATE WITHIN 120 NM S OF THE TROUGH BETWEEN 108W AND 112W AND WITHIN 30 NM OF THE TROUGH BETWEEN 126W AND 129W. .FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER. $$