Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 303 AM EDT Wed Mar 11 2020 Valid 00Z Thu Mar 12 2020 - 00Z Thu Mar 19 2020 A cold front is forecast to approach the western Hawaiian islands today before stalling on Thursday, and drifting very slowly southeastward across the state through late this week, and washing out over the weekend. Moisture associated with the boundary is expected to initially be limited (PWs near 1 inch), keeping shower activity somewhat sparse through Thursday. As the front weakens over the weekend, deeper moisture is forecast to nonetheless spread north toward Hawaii ahead of an amplifying upper-level trough northwest of the state. This should bring an increase in convection across Hawaii through the weekend, with relatively light and variable flow in the vicinity of the weakening front making showers a possibility for typical windward as well as mauka locations. By Mon-Tue, models show another cold front approaching the state ahead of the amplifying upper trough, with some solutions even developing a closed upper-level low just west of Hawaii. Ensemble show broad consensus for at least an amplifying trough west of the state early next week, which should continue to increase moisture across Hawaii and the potential for areas of heavy rainfall. Ryan