FZHW50 PHFO 181940 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 940 AM HST Thu Aug 18 2022 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 940 AM HST Thu Aug 18 2022 .Synopsis for Hawaiian coastal waters... A surface ridge just north of the state is keeping trade winds on the lighter side this morning. The ridge is forecast to drift northward over the next few days resulting in trade winds increasing. Trade winds may become a bit lighter around Monday as a frontal system far northwest of the area nudges the ridge axis closer to the state.
Big Island Windward Waters- 940 AM HST Thu Aug 18 2022
REST OF TODAY East winds 20 knots. Wind waves to 4 feet. Scattered showers late this morning, then isolated showers with a slight chance of thunderstorms this afternoon.
TONIGHT East winds to 25 knots. Wind waves to 4 feet. Scattered showers, mainly in the evening.
FRIDAY East winds 20 knots. Wind waves to 4 feet. Isolated showers.
FRIDAY NIGHT East winds 20 knots. Wind waves to 4 feet. Isolated showers.
SATURDAY East winds 20 knots. Wind waves to 4 feet. Southwest swell 3 feet in the afternoon. Isolated showers.
SATURDAY NIGHT East winds 20 knots. Wind waves to 4 feet. Southwest swell 3 feet. Isolated showers in the evening, then scattered showers after midnight.
SUNDAY Northeast winds to 25 knots. Wind waves 4 to 5 feet. Southwest swell 3 feet. Scattered showers.
MONDAY East winds 15 knots. Wind waves around 4 feet. Mixed swell south 3 feet and northeast 3 feet. Scattered showers. Winds and seas higher in and near tstms.
Big Island Leeward Waters- 940 AM HST Thu Aug 18 2022
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
REST OF TODAY West of the Big Island, west winds 10 knots. Near South Point, east winds 20 knots, rising to 25 knots this afternoon. Wind waves to 5 feet. Isolated showers. A slight chance of thunderstorms this afternoon.
TONIGHT Northwest winds 10 knots west of the Big Island...east to 25 knots near South Point. Wind waves to 7 feet. Isolated showers.
FRIDAY West winds 10 knots west of the Big Island...east to 25 knots near South Point. Wind waves to 7 feet. Isolated showers in the morning.
FRIDAY NIGHT West of the Big Island, winds variable less than 10 knots, becoming northwest 10 knots after midnight. Near South Point, east winds to 25 knots. Wind waves to 7 feet. Isolated showers after midnight.
SATURDAY West of the Big Island, winds variable less than 10 knots, becoming southwest 10 knots in the afternoon. Near South Point, east winds to 25 knots. Wind waves to 7 feet. South swell 3 feet in the afternoon. Isolated showers in the morning.
SATURDAY NIGHT Winds variable less than 10 knots west of the Big Island...east to 25 knots near South Point. Wind waves to 7 feet. South swell 3 feet. Isolated showers after midnight.
SUNDAY West of the Big Island, south winds 10 knots, veering to northwest in the afternoon, then becoming variable less than 10 knots. Near South Point, east winds to 25 knots. Wind waves around 7 feet. South swell 3 feet. Isolated showers.
MONDAY West of the Big Island, winds variable less than 10 knots, becoming south 10 knots in the afternoon, then veering to west in the evening, veering to north after midnight. Near South Point, east winds 15 knots. Wind waves 4 to 6 feet. South swell 3 feet. Isolated showers. Winds and seas higher in and near tstms.
Big Island Southeast Waters- 940 AM HST Thu Aug 18 2022
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
REST OF TODAY East winds to 25 knots. Wind waves to 5 feet. Isolated showers. A slight chance of thunderstorms this afternoon.
TONIGHT East winds to 25 knots. Wind waves to 6 feet. Scattered showers, mainly in the evening.
FRIDAY East winds to 25 knots. Wind waves to 7 feet. Isolated showers.
FRIDAY NIGHT East winds to 25 knots. Wind waves to 7 feet. Isolated showers.
SATURDAY East winds to 25 knots. Wind waves to 7 feet. South swell 3 feet in the afternoon. Isolated showers.
SATURDAY NIGHT Northeast winds to 25 knots. Wind waves to 7 feet. South swell 3 feet. Isolated showers.
SUNDAY Northeast winds to 25 knots. Wind waves around 7 feet. South swell 3 feet. Isolated showers.
MONDAY East winds 20 knots. Wind waves 4 to 6 feet. Mixed swell south 3 feet and northeast 3 feet. Scattered showers. Winds and seas higher in and near tstms.
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