Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 304 AM EDT Wed Apr 23 2025 Valid 00Z Thu 24 Apr 2025 - 00Z Thu 01 May 2025 ...Wet Weather Pattern... Guidance generally agrees in showing the settling of an upper trough/closed low and an organized surface system just to the west of the state through Friday. Weakening and veering lead flow to southeasterly to southerly winds over the state will bring in deepened moisture to fuel showers with heavier local downpours. A flood watch remains in effect for the western islands today. The upper system should slowly eject and lose influence into the weekend, but as a moisture pooling trailing front and deep shower focus is expected to work slowly into the state from the west, with an associated weather focus lingering into next week. Schichtel