High Seas Forecast
Issued by NWS
Issued by NWS
083 FZPN40 PHFO 171514 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1700 UTC TUE SEP 17 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. 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 17 2024. 24 HOUR FORECAST VALID 1200 UTC SEP 18 2024. 48 HOUR FORECAST VALID 1200 UTC SEP 19 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 21N161E 18N160E MOVING WNW 15 KT. ISOLATED MODERATE TSTMS WITHIN 90 NM OF TROUGH. .24 HOUR FORECAST TROUGH MOVED W OF AREA. .WINDS 20 TO 25 KT IN AREA BOUNDED BY 11N165W 16N163W 20N158W 23N162W 30N162W 30N150W 25N147W 21N140W 14N140W 10N160W 11N165W...EXCEPT FROM 18N TO 25N BETWEEN 157W AND 149W. .24 HOUR FORECAST WINDS 20 TO 25 KT FROM 12N TO 19N E OF 170W. .48 HOUR FORECAST WINDS EASED BELOW 20 KT. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 TO 11 FT FROM 07N TO 18N BETWEEN 164W AND 145W. .24 HOUR FORECAST SEAS 8 TO 10 FROM 11N AND 17N BETWEEN 169W AND 155W. SEAS 8 TO 9 FT FROM 14N TO 18N BETWEEN 154W AND 143W. .48 HOUR FORECAST SEAS 8 TO 9 FT FROM 13N TO 15N BETWEEN 170W AND 167W. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .ITCZ 06N140W 06N144W 09N147W 09N150W 08N160W 08N175W 09N179E 08N169E. ISOLATED TO LOCALLY SCATTERED MODERATE TSTMS WITHIN 210 NM OF ITCZ. .SCATTERED MODERATE TSTMS N OF 24N BETWEEN 179W AND 169W...AND FROM 14N TO 22N BETWEEN 166E AND 172E. $$ .FORECASTER PIERCE. HONOLULU HI.