High Seas Forecast
Issued by NWS
Issued by NWS
142 FZPN40 PHFO 172242 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 2300 UTC FRI MAY 17 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. SECURITE NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 1800 UTC MAY 17 2024. 24 HOUR FORECAST VALID 1800 UTC MAY 18 2024. 48 HOUR FORECAST VALID 1800 UTC MAY 19 2024. .WARNINGS. ...GALE WARNING... .WEAKENING FRONT 30N156W 24N156W 19N161W MOVING W SLOWLY. WINDS 30 TO 35 KT N OF 28N BETWEEN 156W AND 151W. SEE ADDITIONAL WINDS AND SEAS BELOW. ISOLATED MODERATE TSTMS WITHIN 120 NM E OF FRONT N OF 27N. .24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N159W 24N162W 17N165W. SEE WINDS AND SEAS BELOW. .48 HOUR FORECAST TROUGH 30N160W 23N164W 16N170W. SEE WINDS AND SEAS BELOW. .SYNOPSIS AND FORECAST. .WINDS 20 TO 30 KT N OF 25N BETWEEN 176E AND 160W...AND N OF 21N BETWEEN 157W AND 150W. WINDS 20 TO 25 KT ELSEWHERE N OF LINE 18N160E 11N170E 11N178W 25N175W 24N162W 30N160W. .24 HOUR FORECAST WINDS 20 TO 25 KT W OF LINE 25N160E 12N179W 09N160E...AND E OF 163W BETWEEN 06N AND 19N. WINDS 20 TO 30 KT N OF LINE 30N179W 24N167W 25N159W 30N150W. .48 HOUR FORECAST WINDS 20 TO 25 KT W OF LINE 21N160E 12N179E 09N160E...AND E OF 166W BETWEEN 06N AND 20N. WINDS 20 TO 30 KT IN AREA 30N161W 20N165W 20N160W 25N158W 30N151W. .OTHERWISE..WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 12 TO 16 FT N OF LINE 30N180W 24N178W 25N169W 30N162W. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 15N160E 09N171E 10N172W 14N157W 30N151W. SEAS 8 TO 9 FT E OF 156W BETWEEN 05N AND 15N. .24 HOUR FORECAST SEAS 8 TO 12 FT N OF LINE 11N160E 08N172E 14N170W 24N170W 30N155W. SEAS 8 TO 10 FT IN AREA 05N140W 03N151W 14N169W 20N161W 20N150W 13N140W. .48 HOUR FORECAST SEAS 8 TO 10 FT W OF LINE 22N160E 13N178W 09N160E. SEAS 8 TO 10 FT N OF LINE 30N168W 23N159W 30N156W. SEAS 8 TO 9 FT E OF 165W BETWEEN 04N AND 20N. .OTHERWISE...SEAS 8 FT OR LESS OVER REMAINDER OF FORECAST AREA. .ITCZ 05N140W 05N153W 08N170W 05N172E. ISOLATED MODERATE TSTMS WITHIN 120 NM OF ITCZ W OF 165W. .ISOLATED MODERATE TSTMS W OF 173E BETWEEN 03N AND 09N. $$ .FORECASTER POWELL. HONOLULU HI.