FZHW61 PHFO 151518 OFFN10 NAVTEX MARINE FORECAST FOR HAWAIIAN WATERS NATIONAL WEATHER SERVICE HONOLULU HI 518 AM HST WED APR 15 2026 ...Please refer to Coastal Waters Forecasts available through NOAA Weather Radio and other means for detailed coastal forecasts... .Synopsis...A surface trough will remain over the NW waters through Thursday and support isolated thunderstorms, then dissipate. High pressure then builds N of the area Friday through the weekend as yet another trough develops near or just W of the NW waters. $$ Hawaiian waters within 40 nautical miles including the channels- .TODAY...East northeast winds 7 to 10 knots around Kauai...east 15 to 20 knots elsewhere. Seas 4 to 5 feet. Wave Detail: East southeast 3 feet at 6 seconds and south 3 feet at 12 seconds. A slight chance of showers. .TONIGHT...East northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 3 feet at 7 seconds and south 3 feet at 12 seconds. A slight chance of showers. .THURSDAY...East northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 3 feet at 7 seconds. A slight chance of showers. .THURSDAY NIGHT...East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East southeast 3 feet at 6 seconds. A slight chance of showers. .FRIDAY...East northeast winds 10 to 15 knots. Seas 4 to 5 feet. A slight chance of showers. .FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to 6 feet. A slight chance of showers. .SATURDAY...Alenuihaha Channel, east northeast winds 15 to 20 knots, rising to 20 to 25 knots. Elsewhere, east winds 10 to 15 knots. Seas 4 to 6 feet. A chance of showers through the night, then a slight chance of showers through the day. .SUNDAY...East winds 10 to 15 knots, rising to 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers. $$ Hawaiian Offshore Waters- .TODAY...NW Half, SE winds 10 to 15 kt, becoming E late in the afternoon. SE Half, E winds 10 to 20 kt. Seas 6 ft. Isolated thunderstorms NW Half. .TONIGHT...N of 20N, E winds 10 to 15 kt, diminishing to up to 10 kt after midnight. Elsewhere, E winds 10 to 20 kt. Seas 6 ft. Isolated thunderstorms NW Half. .THURSDAY...NW Half, NE winds 10 to 15 kt, diminishing to up to 10 kt early in the afternoon, then, rising to 10 to 15 kt late in the afternoon. SE Half, E winds 10 to 15 kt. Seas 6 ft. Isolated thunderstorms NW Half. .THURSDAY NIGHT...E winds 10 to 20 kt. Seas 6 ft. Isolated thunderstorms NW Half. .FRIDAY AND SATURDAY...E winds 10 to 20 kt. Seas 6 ft. Isolated thunderstorms NW Half. .SUNDAY...E winds 10 to 20 kt. Seas 6 to 7 ft. Isolated thunderstorms far W waters. $$