Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 231 AM EDT Sat Jul 10 2021 Valid 00Z Sun Jul 11 2021 - 00Z Sun Jul 18 2021 High pressure centered at the mid-latitudes dominates the north central Pacific this weekend through next week. A tropical wave moves west away from the islands, bringing the deep layer moisture with it. Trade winds slowly increase in magnitude ahead of the surface ridge this weekend and remain moderate to brisk through next week. The trade flow maintains widely scattered windward terrain/mountain focused showers through the weekend and next week. Local enhancements may occur with each low amplitude tropical wave that passes through next week. The persistent low-mid anticyclone north of the islands keeps the deep moisture plume (higher precipitable water values) south of the islands through next week, preventing greater coverage of showers. Petersen