High Seas Forecast
Issued by NWS
Issued by NWS
023 FZPN40 PHFO 230330 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 0500 UTC THU MAY 23 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC MAY 23 2024. 24 HOUR FORECAST VALID 0000 UTC MAY 24 2024. 48 HOUR FORECAST VALID 0000 UTC MAY 25 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 30N167W 19N168W MOVING W SLOWLY. ISOLATED MODERATE TSTMS WITHIN 300 NM E OF TROUGH N OF 26N. .24 HOUR FORECAST TROUGH 30N168W 19N170W. .48 HOUR FORECAST TROUGH 30N169W 2N173W 19N176W. .TROUGH 09N175W 03N170E MOVING W 10 KT. SCATTERED MODERATE TSTMS WITHIN 180 NM OF TROUGH N OF 08N. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 240 NM OF TROUGH. .24 HOUR FORECAST TROUGH 11N176E 04N169E. .48 HOUR FORECAST TROUGH DISSIPATED. .NE TO E WINDS 20 TO 25 KT N OF 07N AND E OF 162W. .24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT N OF 07N AND E OF 165W. .48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 07N TO 27N BETWEEN 165W AND 148W. .SEAS 8 TO 10 FT FROM 03N TO 28N E OF 161W. .24 HOUR FORECAST SEAS 8 TO 10 FT FROM 03N TO 27N E OF 165W. .48 HOUR FORECAST SEAS 8 TO 10 FT FROM 05N TO 18N BETWEEN 169W AND 142W. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS. .ISOLATED MODERATE TSTMS FROM 09N TO 13N BETWEEN 173W AND 179W. .ITCZ 06N140E 04N155W 07N170W. ISOLATED MODERATE TSTMS WITHIN 120 NM OF ITCZ. $$ .FORECASTER PIERCE/POWELL. HONOLULU HI.