High Seas Forecast
Issued by NWS
Issued by NWS
605 FZPN40 PHFO 151528 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1700 UTC SUN SEP 15 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC SEP 15 2024. 24 HOUR FORECAST VALID 1200 UTC SEP 16 2024. 48 HOUR FORECAST VALID 1200 UTC SEP 17 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 30N167W 24N168W MOVING W 10 KT. ISOLATED MODERATE TSTMS WITHIN 150 NM E OF TROUGH. .24 HOUR FORECAST TROUGH 30N174W 26N177W. .48 HOUR FORECAST TROUGH DISSIPATED. .TROUGH 30N171E 25N170E 22N171E. MOVING W 15 KT. ISOLATED MODERATE TSTMS WITHIN 120 NM E OF TROUGH. .24 HOUR FORECAST TROUGH DISSIPATED. .WINDS 20 TO 25 KT FROM 18N TO 10N E OF 169W. .24 HOUR FORECAST WINDS 20 TO 25 KT FROM 17N TO 11N BETWEEN 158W AND 144W...AND FROM 06N TO 02N E OF 150W. .48 HOUR FORECAST WINDS 20 TO 25 KT FROM 18N TO 10N BETWEEN 165W AND 150W. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 TO 10 FT FROM 17N TO 10N BETWEEN 167W AND 151W. .24 HOUR FORECAST SEAS 8 TO 9 FT FROM 16N TO 10N BETWEEN 173W AND 163W...AND FROM 19N TO 10N E OF 154W. .48 HOUR FORECAST SEAS 8 TO 10 FT FROM 20N TO 10N E OF 160W. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .ITCZ 10N140W 11N152W 08N166W 07N177E 09N166E. SCATTERED MODERATE TSTMS WITHIN 150 NM OF ITCZ. .ISOLATED MODERATE TSTMS FROM 21N TO 11N W OF 168E...AND FROM 15N TO 12N BETWEEN 179E AND 174W. $$ .FORECASTER TROTTER. HONOLULU HI.