302 FZHW51 PHFO 310136 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 336 PM HST Wed Dec 30 2020 .Synopsis for Hawaiian coastal waters... A high building north of the state Thursday will further strengthen the trade winds Thursday night and Friday with near gales expected over the windier channels around Maui and the Big Island. Another large northwest swell is expected to gradually build from west to east Thursday into Friday. $$ Hawaiian waters within 40 nautical miles including the channels- ...SMALL CRAFT ADVISORY... .TONIGHT...East winds 15 to 25 knots. Wind waves 5 to 8 feet. Northwest swell 11 feet. Isolated showers. .THURSDAY...Northeast winds 20 to 25 knots. Wind waves 6 to 9 feet. Northwest swell 13 feet. Isolated showers. .THURSDAY NIGHT AND FRIDAY...Northeast winds 20 to 30 knots. Wind waves 7 to 10 feet. Northwest swell 12 to 14 feet. Isolated showers. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Northeast winds 20 to 25 knots. Wind waves 6 to 10 feet. Northwest swell 10 feet lowering to 8 feet Saturday night. Isolated showers. .SUNDAY...East winds 15 to 25 knots. Wind waves 6 to 9 feet. Northwest swell 8 to 10 feet. Isolated showers. .MONDAY...East winds 15 to 20 knots. Wind waves 5 to 7 feet. Northwest swell 10 feet. Isolated showers. $$