High Seas Forecast
Issued by NWS
Issued by NWS
655 FZPN40 PHFO 171033 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1100 UTC TUE SEP 17 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0600 UTC SEP 17 2024. 24 HOUR FORECAST VALID 0600 UTC SEP 18 2024. 48 HOUR FORECAST VALID 0600 UTC SEP 19 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 30N176W 27N178W MOVING W SLOWLY. ISOLATED MODERATE TSTMS WITHIN 120 NM E OF TROUGH AND 60 NM W OF TROUGH. .24 HOUR FORECAST TROUGH DISSIPATED. .TROUGH 21N168E 18N165E 16N162E MOVING W 15 KT. ISOLATED MODERATE TSTMS WITHIN 300 NM OF TROUGH. .24 HOUR FORECAST TROUGH MOVED W OF AREA. .WINDS 20 TO 25 KT IN AREA BOUNDED BY 11N165W 16N163W 20N158W 25N164W 30N162W 30N150W 21N140W 13N140W 12N150W 10N160W 11N165W...EXCEPT FROM 19N TO 25N BETWEEN 157W AND 149W. .24 HOUR FORECAST WINDS 20 TO 25 KT FROM 12N TO 19N E OF 169W. .48 HOUR FORECAST WINDS EASED BELOW 20 KT. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 TO 11 FT IN AREA BOUNDED BY 14N162W 19N157W 18N140W 14N140W 04N149W 14N162W. .24 HOUR FORECAST SEAS 8 TO 11 FT IN AREA BOUNDED BY 13N167W 17N164W 19N148W 15N141W 15N150W 07N152W 06N160W 13N167W. .48 HOUR FORECAST SEAS 8 TO 10 FT FROM 11N TO 16N BETWEEN 170W AND 163W. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .ITCZ 08N140W 11N147W 10N165W 09N169W 11N177W 10N177E 10N166E. SCATTERED TSTMS WITHIN 180 NM OF POINT 20N172E. SCATTERED MODERATE TSTMS WITHIN 250 NM OF ITCZ BETWEEN 167W AND 143W. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 210 NM OF ITCZ. .SCATTERED MODERATE TSTMS FROM 19N TO 25N W OF 165E. $$ .FORECASTER PIERCE. HONOLULU HI.