High Seas Forecast
Issued by NWS
Issued by NWS
383 FZPN40 PHFO 070300 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 0500 UTC SUN DEC 07 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. SECURITE NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 0000 UTC DEC 07 2025. 24 HOUR FORECAST VALID 0000 UTC DEC 08 2025. 48 HOUR FORECAST VALID 0000 UTC DEC 09 2025. .WARNINGS. ...GALE WARNING... .FRONT 30N173E 28N165E 26N160E MOVING E 25 KT. WINDS 20 TO 30 KT N OF FRONT. .24 HOUR FORECAST FRONT 30N180W 28N170E 26N160E. WINDS 30 TO 35 KT N OF FRONT. WINDS 20 TO 30 KT ELSEWHERE WITHIN 90 NM OF FRONT. .48 HOUR FORECAST FRONT 30N175W 25N170E 24N160E. WINDS 30 TO 35 KT WITHIN 90 NM OF FRONT. WINDS 20 TO 30 KT ELSEWHERE N OF FRONT. .SYNOPSIS AND FORECAST. .TROUGH 30N161W 23N172W MOVING NE SLOWLY. .24 HOUR FORECAST TROUGH 30N162W 25N170W. .48 HOUR FORECAST TROUGH DISSIPATED. .TROUGH 17N174W 12N178W 08N177W MOVING W 10 KT. .24 HOUR FORECAST TROUGH 15N180W 11N179E 08N179W. .48 HOUR FORECAST TROUGH DISSIPATED. .WINDS 20 TO 25 KT FROM 05N TO 20N W OF 175W. .24 HOUR FORECAST WINDS 20 TO 25 KT WITHIN 180 NM OF POINT 10N177W. .48 HOUR FORECAST WINDS DIMINISHING TO LESS THAN 20 KT. .WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 2.5 TO 4 M W OF LINE 30N180W 15N155W 05N145W 04N160E. .24 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 05N160E 10N170E 05N180W 05N170W 30N180W. .48 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 22N160E 30N160W. .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .ITCZ 07N140W 07N150W 11N173W. SCATTERED MODERATE TSTMS WITHIN 120 NM OF ITCZ W OF 150W. .SCATTERED MODERATE TO STRONG TSTMS FROM 05N TO 20N BETWEEN 165W AND 178W. $$ .FORECASTER PECHACEK. HONOLULU HI.