FZHW61 PHFO 210957 OFFN10 NAVTEX MARINE FORECAST FOR HAWAIIAN WATERS NATIONAL WEATHER SERVICE HONOLULU HI 1157 PM HST SUN SEP 20 2026 ...Please refer to Coastal Waters Forecasts available through NOAA Weather Radio and other means for detailed coastal forecasts... .Synopsis...A trough, which may develop into a tropical cyclone, will approach from the E on Tuesday and bring renewed thunderstorm potential through Friday. Fresh to strong trades continue through most of the week before strengthening heading into the $$ Hawaiian waters within 40 nautical miles including the channels- .REST OF TONIGHT...East northeast winds 25 to 30 knots. Seas 6 to 9 feet. Wave Detail: East 6 feet at 7 seconds and south southwest 3 feet at 14 seconds. Isolated showers. .MONDAY...East northeast winds 20 to 25 knots. Seas 6 to 8 feet. Wave Detail: East 6 feet at 7 seconds and south 3 feet at 13 seconds. Isolated showers. .MONDAY NIGHT...East northeast winds 20 to 25 knots. Seas 6 to 8 feet. Wave Detail: East 6 feet at 7 seconds and south 3 feet at 13 seconds. Scattered showers. .TUESDAY...East northeast winds 20 to 25 knots. Seas 6 to 8 feet. Wave Detail: East 6 feet at 8 seconds and north 3 feet at 12 seconds. Scattered showers. .TUESDAY NIGHT...East northeast winds 25 to 30 knots. Seas 7 to 8 feet. Scattered showers. .WEDNESDAY...East northeast winds 25 to 30 knots. Seas 7 to 8 feet. Scattered showers. .WEDNESDAY NIGHT...East northeast winds 25 to 30 knots. Seas 6 to 8 feet. Numerous showers. .THURSDAY...East northeast winds 25 to 30 knots. Seas 6 to 8 feet. Scattered showers. .FRIDAY...winds east northeast winds 30 to 40 knots. Seas 7 to 9 feet. Scattered showers. Isolated thunderstorms through the day. Winds and seas higher in and near tstms. $$ Hawaiian Offshore Waters- .REST OF TONIGHT...E winds 15 to 25 kt. Seas 7 to 9 ft. Isolated thunderstorms S of 19N. .MONDAY...E winds 15 to 25 kt. Seas 7 to 9 ft. Isolated thunderstorms S of 18N. .MONDAY NIGHT...E winds 10 to 20 kt N of 24N, E 15 to 25 kt elsewhere. Seas 7 to 9 ft. Isolated thunderstorms S of 18N. .TUESDAY THROUGH WEDNESDAY...NE winds 15 to 25 kt. Seas 6 to 11 ft, highest over SE waters. Isolated thunderstorms SE Waters. .THURSDAY...NE winds 15 to 25 kt. Seas 6 to 9 ft. Isolated thunderstorms SE Waters. .FRIDAY...E winds 20 to 30 kt. Seas 7 to 10 ft. Isolated thunderstorms SE Waters. $$