FZHW61 PHFO 230939 OFFN10 NAVTEX MARINE FORECAST FOR HAWAIIAN WATERS NATIONAL WEATHER SERVICE HONOLULU HI 1139 PM HST TUE SEP 22 2026 ...Please refer to Coastal Waters Forecasts available through NOAA Weather Radio and other means for detailed coastal forecasts... .Synopsis...A tropical storm is forecast to form in the far southern offshore waters Wednesday and slowly move N through Friday and shift W this weekend. Winds and seas will be highly variable on the eventual track of this system, but will generally impact the SE half of the offshore area. $$ Hawaiian waters within 40 nautical miles including the channels- .REST OF TONIGHT...East northeast winds to 15 knots to Kauai... east northeast 20 to 25 knots elsewhere. Seas 5 to 8 feet. Wave Detail: East 7 feet at 9 seconds, north 3 feet at 11 seconds and south 3 feet at 12 seconds. Scattered showers. .WEDNESDAY...East northeast winds 20 to 25 knots. Seas 5 to 8 feet. Wave Detail: East 7 feet at 9 seconds and north northwest 3 feet at 10 seconds. Occasional heavy showers with isolated thunderstorms. .WEDNESDAY NIGHT...East northeast winds 20 to 25 knots. Seas 5 to 8 feet. Wave Detail: East 7 feet at 8 seconds. Occasional heavy showers with isolated thunderstorms. .THURSDAY...East northeast winds to 20 knots to Kauai...east northeast 25 to 30 knots elsewhere. Seas 6 to 9 feet. Wave Detail: East 8 feet at 8 seconds. Scattered heavy showers with isolated thunderstorms. .THURSDAY NIGHT...East northeast winds 25 to 30 knots. Seas 8 to 11 feet. Scattered showers with isolated thunderstorms. .FRIDAY...East northeast winds 25 to 35 knots. Seas 9 to 12 feet. Scattered showers with isolated thunderstorms. .FRIDAY NIGHT...East northeast winds 30 to 40 knots Alenuihaha Channel...northeast 25 to 30 knots elsewhere. Seas 9 to 12 feet. Scattered showers with isolated thunderstorms. .SATURDAY...East winds 25 to 30 knots. Seas 8 to 11 feet. Scattered showers. .SUNDAY...East winds 25 to 30 knots. Seas 9 to 10 feet. Scattered showers. Winds and seas higher in and near tstms. $$ Hawaiian Offshore Waters- ...TROPICAL STORM WARNING... .REST OF TONIGHT...SE half, NE to E winds 20 to 30 kt. Seas 8 to 12 ft. NW half, NE to E winds 15 to 20 kt. Seas 6 to 8 ft. Isolated thunderstorms SE half. .WEDNESDAY and WEDNESDAY NIGHT...Tropical Storm conditions expected S of 17N E 160W. Elsewhere NE to E winds 15 to 20 kt. Seas 6 to 9 ft. Scattered thunderstorms SE half. .THURSDAY...Tropical Storm conditions expected S of 17N E 160W. Elsewhere NE to E winds 20 to 30 kt. Seas 7 to 10 ft. Scattered thunderstorms SE half. .THURSDAY NIGHT...Tropical Storm conditions expected S of 17N E 160W Elsewhere NE to E winds 25 to 40 kt. Seas 8 to 11 ft. Scattered thunderstorms. .FRIDAY through SUNDAY...Hurricane conditions possible S of 20N. Elsewhere NE to E winds 25 to 40 kt. Seas 8 to 12 ft. Scattered thunderstorms. $$