057 FZHW51 PHFO 221336 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 336 AM HST Thu Oct 22 2020 .Synopsis for Hawaiian coastal waters... A surface front is about 210 nm northwest of Kauai, while a weak surface ridge is near Maui County. Moist and unstable atmospheric conditions will keep a chance of thunderstorms over the western waters through early Friday morning. A weak surface front is expected to remain northwest of Kauai this weekend. $$ Hawaiian waters within 40 nautical miles including the channels- .TODAY AND TONIGHT...East to southeast winds 10 to 15 knots near the Big Island, and variable winds 10 knots or less elsewhere. Wind waves 2 to 3 feet. Northeast swell 2 to 3 feet. Scattered showers. A slight chance of thunderstorms over the western waters. .FRIDAY AND FRIDAY NIGHT....East to southeast winds 10 to 15 knots near the Big Island, and variable winds 10 knots or less elsewhere. Wind waves 2 to 3 feet. Scattered showers. .SATURDAY THROUGH MONDAY...East to southeast winds 10 to 15 knots near the Big Island and over the Windward Maui County waters. Variable winds 10 knots or less elsewhere. Wind waves 2 to 4 feet. Northwest swell 2 to 3 feet Saturday, then building to 5 to 6 feet from Saturday night through Monday. Northeast swell 2 to 3 feet Monday. Scattered showers. $$