


Coastal Waters Forecast
Issued by NWS
Issued by NWS
245 FZHW51 PHFO 171933 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 933 AM HST Thu Apr 17 2025 .Synopsis for Hawaiian coastal waters... Moist east to southeasterly flow will persist. An upper level disturbance passing over the state will trigger locally heavy showers or thunderstormst today through Friday. High pressure to the northeast of the state will strengthen over the weekend. $$ Hawaiian waters within 40 nautical miles including the channels- .REST OF TODAY...East southeast winds 5 to 15 knots with periods of variable winds Kauai and Oahu waters. East to southeast winds 10 to 20 knots Maui County and Big Island waters. Seas 3 to 5 feet building to 5 to 8 feet Kauai waters by this evening. Wave Detail: East southeast 2 to 3 feet at 5 seconds. Northwest building to 4 to 7 feet at 13 seconds this afternoon. Scattered to numerous showers with isolated thunderstorms. .TONIGHT THROUGH FRIDAY NIGHT...East to southeast winds 10 to 15 knots becoming east at 10 to 20 knots Friday. Seas 6 to 9 feet subsiding to 5 to 7 feet late Friday. Wave Detail: East southeast 1 to 3 feet at 5 seconds. Northwest 5 to 7 feet at 13 seconds. Scattered heavy showers with isolated thunderstorms. .SATURDAY THROUGH MONDAY...East winds 10 to 20 knots. Seas 5 to 6 feet. Scattered showers. Winds and seas higher in and near tstms. $$