Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 800 AM EDT Fri Apr 03 2015 Valid 00Z Sat Apr 04 2015 - 00Z Sat Apr 11 2015 From late this week into the weekend expect moderate trades from the east/southeast as supported by high pressure residing well to the northeast of the state. Primarily windward focused shower activity may increase somewhat, most likely over the Big Island, as an area of greater deep moisture initially just south of the islands drifts northward for a time. From the early into middle part of next week a trough evolving to the north/northeast of the region may push the trailing portion of a surface front toward the islands. Currently expect little enhancement of rainfall with this feature as precipitable water values are forecast to remain steady around 1-1.25 inches or so. Late next week, strong high pressure behind this front should reach a position northwest of the islands, with trades turning more northeasterly and PWATs possibly decreasing a little though likely not quite to the extent of the 00z GFS. At that time the 06z GFS has what appears to be one of the less probable solutions aloft based on other guidance, closing off its eastern Pacific upper low farther westward and thus extending the weak cyclonic flow over/north of the islands farther westward as well. Rausch