High Seas Forecast
Issued by NWS
Issued by NWS
173 FZPN40 PHFO 222225 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 2300 UTC WED JAN 22 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1800 UTC JAN 22 2025. 24 HOUR FORECAST VALID 1800 UTC JAN 23 2025. 48 HOUR FORECAST VALID 1800 UTC JAN 24 2025. .WARNINGS. ...GALE WARNING... .FRONT 30N153W 18N162W 18N177W 27N175E MOVING E 10 KT E OF 163W AND NEARLY STATIONARY AND DISSIPATING ELSEWHERE. NW TO N WINDS 30 TO 35 KT N OF 27N BETWEEN 157W AND 162W. WINDS 20 TO 30 KT ELSEWHERE N OF FRONT...AND N OF 23N WITHIN 120 NM E OF FRONT. SCATTERED MODERATE TSTMS E OF 163W WITHIN 150 NM OF FRONT. .24 HOUR FORECAST FRONT 30N149W 25N150W 17N158W. NW TO N WINDS 30 TO 35 KT N OF 27N BETWEEN 157W AND 162W. W TO NW WINDS 20 TO 30 KT ELSEWHERE N OF 26N BETWEEN 156W AND 167W. S TO SW WINDS 20 TO 25 KT N 23N BETWEEN 144W AND 153W. .48 HOUR FORECAST FRONT 30N148W 25N148W 20N152W. WINDS 20 TO 30 KT N OF 25N BETWEEN 144W AND 163W. .SYNOPSIS AND FORECAST. .FRONT 30N165E 25N160E MOVING E 30 KT. SCATTERED MODERATE TSTMS N OF 25N WITHIN 270 NM E OF FRONT. SW WINDS 20 TO 25 KT N OF 27N W OF 172E. .24 HOUR FORECAST FRONT 30N178W 25N174E 23N160E. WINDS DECREASED TO 20 KT OR BELOW. .48 HOUR FORECAST FRONT 30N170W 25N175E 25N160E. .TROUGH 30N140W 26N144W NEARLY STATIONARY AND DISSIPATING. SE WINDS 20 TO 25 KT N OF 27N E OF 148W. .24 HOUR FORECAST TROUGH DISSIPATED. WINDS DECREASED TO 20 KT OR BELOW. .TROUGH 19N144W 16N146W MOVING W SLOWLY AND DISSIPATING. .24 HOUR FORECAST TROUGH DISSIPATED. .E TO NE WINDS 20 TO 25 KT FROM 14N TO 05N W OF 165W. .24 HOUR FORECAST E TO NE WINDS 20 TO 25 KT FROM 13N TO 04N W OF 165W. E WINDS 20 TO 25 KT FROM 17N TO 07N E OF 150W. .48 HOUR FORECAST E TO NE WINDS 20 TO 25 KT FROM 16N TO 06N W OF 160W. E WINDS 20 TO 25 KT FROM 18N TO 07N E OF 153W. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 12 TO 17 FT N OF 23N BETWEEN 155W AND 167W. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 30N144W TO 20N165W TO 20N180E TO 29N167E TO 28N160E. SEAS 8 TO 9 FT FROM 15N TO 05N BETWEEN 170W AND 172E. .24 HOUR FORECAST SEAS 12 TO 17 FT N OF 23N BETWEEN 150W AND 165W. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 30N140W TO 14N165W TO 15N175W TO 18N180E. SEAS 8 TO 11 FT N OF A LINE FROM 30N174W TO 25N160E. SEAS 8 TO 9 FT FROM 10N TO 05N W OF 173W. .48 HOUR FORECAST SEAS 12 TO 13 FT N OF 27N BETWEEN 157W AND 162W. SEAS 8 TO 12 FT N OF A LINE FROM 16N146W TO 21N165W TO 30N174W TO 22N171E TO 23N160E. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .ITCZ 06N140W 07N160W 05N172E. ISOLATED MODERATE TSTMS WITHIN 120 NM OF ITCZ W OF 160W. $$ .FORECASTER FOSTER. HONOLULU HI.