Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
383 FZHW60 PHFO 212128 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1128 AM HST Sat Sep 21 2024 Hawaiian offshore waters beyond 40 nautical miles out to 240 nautical miles including the portion of the Papahanaumokuakea Marine National Monument east of French Frigate Shoals 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. PHZ105-220700- 1128 AM HST Sat Sep 21 2024 .Synopsis for the Hawaiian offshore waters... A surface ridge far N of Hawaii will weaken through Monday, easing the trade winds slightly. The trades will strengthen Monday night through Wednesday as a new high builds N of the island chain and an area of low pressure passes by to the S. $$ PHZ180-220700- Hawaiian Offshore Waters- 1128 AM HST Sat Sep 21 2024 .THIS AFTERNOON...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUNDAY THROUGH MONDAY...E winds 10 to 20 kt. Seas 4 to 6 ft. Isolated thunderstorms N of 22N. .TUESDAY THROUGH WEDNESDAY...N of 22N, E winds 10 to 15 kt. S of 22N, E winds 15 to 25 kt. Seas 6 to 10 ft. Isolated thunderstorms S of 18N on Wednesday. $$