Expires:202507180200;;597167 FZHW50 PHFO 171306 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 306 AM HST Thu Jul 17 2025 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. PHZ100-180200- 306 AM HST Thu Jul 17 2025 .Synopsis for Hawaiian coastal waters... High pressure will remain far northeast of the state through the rest of the week. Fresh to locally strong trades will persist through today, then decrease slightly as a weak low level trough moves across the state tonight into the weekend. $$