High Seas Forecast
Issued by NWS
Issued by NWS
313 FZPN40 PHFO 241526 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1700 UTC TUE SEP 24 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE HIGHER THAN 10-MINUTE AVERAGE WINDS. 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 OFFSHORE AND HIGH SEAS AREAS ONLY. TO LEARN MORE PLEASE VISIT HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP SECURITE NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 1200 UTC SEP 24 2024. 24 HOUR FORECAST VALID 1200 UTC SEP 25 2024. 48 HOUR FORECAST VALID 1200 UTC SEP 26 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .LOW NEAR 11N170W 1008 MB MOVING N SLOWLY. TROUGH 15N165W TO LOW TO 09N177W MOVING W SLOWLY. WINDS 20 TO 30 KT AND SEAS 8 TO 12 FT WITHIN 240 NM OF TROUGH AND LOW. NUMEROUS MODERATE TO STRONG TSMTS WITHIN 180 NM OF TROUGH. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 360 NM OF TROUGH. .24 HOUR FORECAST LOW NEAR 14N170W 1009 MB. NEW SECOND LOW 10N180W 1010 MB. TROUGH 16N166W TO LOW TO 09N172E TO SECOND LOW 09N170E. WINDS 20 TO 25 KT AND SEAS 8 TO 11 FT FROM 11N TO 18N BETWEEN 164W AND 172W. .48 HOUR FORECAST LOW NEAR 16N171W 1011 MB. SECOND LOW 08N174E 1010 MB. TROUGH 18N170W TO LOW TO 08N177W TO SECOND LOW TO 13N165E. WINDS EASED TO 20 KT OR LESS. SEAS 8 TO 10 FT FROM 16N TO 22N BETWEEN 165W AND 171W. .TROUGH 13N143W 08N153W MOVING W SLOWLY. WINDS 20 TO 25 KT WITHIN 180 NM N OF TROUGH E OF 150W. ISOLATED MODERATE TSTMS WITHIN 180 NM N OF TROUGH E OF 150W. .24 HOUR FORECAST TROUGH 13N145W 09N157W. ASSOCIATED WINDS DIMINISHED TO 20 KT OR LESS. .48 HOUR FORECAST TROUGH 12N147W 11N153W 06N160W. .TROUGH 18N167E 05N161E MOVING W SLOWLY. SCATTERED MODERATE TSTMS WITHIN 180 NM OF TROUGH N OF 15N. .24 HOUR FORECAST TROUGH 18N161E 08N160E. .48 HOUR FORECAST TROUGH MOVED W OF AREA. .TROUGH 29N161E 23N160E MOVING NW SLOWLY. SCATTERED MODERATE TSTMS N OF 24N BETWEEN 170E AND TROUGH. .24 HOUR FORECAST TROUGH MOVED NW OF FORECAST AREA. .WEAK TROUGH 29N162W 24N163W MOVING W 15 KT. ISOLATED MODERATE TSTMS WITHIN 120 NM OF TROUGH S OF 25N. .24 HOUR FORECAST TROUGH DISSIPATED. .OTHERWISE WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 TO 10 FT N OF LINE 30N154W 24N163W 19N180W. .24 HOUR FORECAST SEAS 8 TO 9 FT N OF LINE 28N140W 22N150W 22N154W. .48 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LESS. .OTHERWISE SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. $$ .FORECASTER ALMANZA. HONOLULU HI.