Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
799 FZHW60 PHFO 220313 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 513 PM 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. PHZ105-221300- 513 PM HST Sat Sep 21 2024 .Synopsis for the Hawaiian offshore waters... A surface ridge far N of Hawaii will weaken through Sunday, easing the trade winds into Monday. The trades will strengthen Tuesday and Wednesday as a new high builds N of the island chain and an area of low pressure passes by to the S. $$ PHZ180-221300- Hawaiian Offshore Waters- 513 PM HST Sat Sep 21 2024 .TONIGHT...E winds 10 to 20 kt, strongest far NW waters. Seas 4 to 7 ft. Isolated thunderstorms N of 24N. .SUNDAY THROUGH MONDAY...E winds 10 to 15 kt. Seas 4 to 6 ft. Isolated thunderstorms N of 23N. .MONDAY NIGHT...E winds 10 to 20 kt, strongest S of 19N. Seas 6 to 7 ft. .TUESDAY...N of 20N, E winds 10 to 20 kt. S of 20N, E winds 20 to 25 kt. Seas 6 to 8 ft. Isolated thunderstorms far SE Waters. .WEDNESDAY AND THURSDAY...N of 20N, E winds 15 to 20 kt. S of 20N, E winds 20 to 25 kt. Seas 6 to 9 ft. Isolated thunderstorms S of 18N. $$