Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 347 AM EDT Fri Aug 16 2024 Valid 00Z Sat Aug 17 2024 - 00Z Sat Aug 24 2024 Model and ensemble forecast guidance remains reasonably well clustered for much of the next week in a pattern with seemingly above normal predictability. Trades will strengthen and maintain breezy levels as surface high pressure builds and bridges to the north of the state as centered around 40-45N. Through the period, some showers are possible favoring typical windward/mauka areas, but occasionally spilling into leeward areas. Showers will be supported by nearby mid-upper level troughing, and periodic moisture increases will move across the state, but widespread heavy rain is not expected. The surface pressure pattern would likely keep any central Pacific tropical systems that may form next week to the south of Hawaii through this forecast period. However, some increased moisture could advect into at least the Big Island early next week and again later next week from possible tropical low/convective developments now being monitored. Schichtel