Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 752 AM EDT Wed Mar 11 2015 Valid 00Z Thu Mar 12 2015 - 00Z Thu Mar 19 2015 The edge of the higher PW plume will lift through the Big Island, Maui, and possibly Lanai today before drifting back to the southeast tonight and early Thursday. GFS and its ensembles continue to be wetter than the ECMWF and its ensembles but the trend has been toward an ECMWF-like solution. Thereafter, upper trough will pass by 155W early Friday and heights will be on the rebound. Drier air and increased subsidence will limit shower activity as trades veer and weaken from north to northeast to more typically east by the end of the weekend. Next system will pass eastward along 40N early next week with the tail end of the front approaching the NW islands by Wednesday but with typical timing differences among the deterministic models. A GEFS/ECENS mean compromise should suffice. Fracasso