Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 826 AM EDT Wed Jul 18 2018 Valid 00Z Thu Jul 19 2018 - 00Z Thu Jul 26 2018 An upper level circulation will settle into northwest of the islands between two ridges and this pattern will persist for several days. Surface high pressure will persist to the north of the state which will favor moderate mean trades to the south. There are three disturbances in the easterlies that will track south of the islands over the next week. Precipitable water values of 2+ inches will be on the increase from east to west, which will keep showers possible through the weekend and into early next week. Campbell