High Seas Forecast
Issued by NWS
Issued by NWS
915 FZPN40 PHFO 220315 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 0500 UTC SUN SEP 22 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC SEP 22 2024. 24 HOUR FORECAST VALID 0000 UTC SEP 23 2024. 48 HOUR FORECAST VALID 0000 UTC SEP 24 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .LOW NEAR 10N140W 1007 MB MOVING W SLOWLY. WINDS 20 TO 25 KT WITHIN 60 NM OF LOW. SCATTERED MODERATE TSTMS WITHIN 120 NM OF LOW. .24 HOUR FORECAST LOW NEAR 11N141W 1007 MB. WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT WITHIN 150 NM OF LOW. .48 HOUR FORECAST LOW NEAR 12N145W 1005 MB. WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT FROM 17N TO 11N BETWEEN 144W AND 148W. .LOW NEAR 07N162W 1011 MB MOVING W 10 KT. ISOLATED MODERATE TSTMS WITHIN 180 NM OF LOW. .24 HOUR FORECAST LOW DISSIPATED. .TROUGH 19N180E 12N171E 14N160E MOVING SW SLOWLY. SCATTERED MODERATE TSTMS WITHIN 210 NM N OF TROUGH. ISOLATED MODERATE TSTMS WITHIN 60 NM S OF TROUGH. .24 HOUR FORECAST TROUGH 19N176E 10N168E. .48 HOUR FORECAST TROUGH 15N166E 10N163E 05N163E. .TROUGH 30N176E 24N175E 19N178E MOVING W SLOWLY. ISOLATED MODERATE TSTMS FROM 21N TO 24N BETWEEN 177E AND 175E. .24 HOUR FORECAST WEAKENING TROUGH 28N171E 23N170E. .48 HOUR FORECAST TROUGH DISSIPATED. .TROUGH 30N148W 23N150W MOVING W 10 KT. .24 HOUR FORECAST DISSIPATING TROUGH 29N152W 23N158W. .48 HOUR FORECAST TROUGH DISSIPATED. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .MONSOON TROUGH 10N140W 09N144W 11N157W 08N162W. ISOLATED MODERATE TSTMS WITHIN 120 NM OF MONSOON TROUGH. $$ .FORECASTER TSAMOUS. HONOLULU HI.