Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 652 AM EST Fri Feb 12 2016 Valid 00Z Sat Feb 13 2016 - 00Z Sat Feb 20 2016 The global models and ensemble guidance display excellent agreement at the surface and aloft across the central Pacific through next week. Trade winds early on relax by Sunday as a cold front/shear line move through the Papahanaumokuakea Marine National Monument into the northwestern main islands of Hawai'i. From Sunday into Tuesday, a narrow band of higher PWATs and should enhance shower activity. High pressure building in behind the front will support freshening trade winds from Monday onward, weakening on Thursday as the surface high elongates ahead of a Pacific system moving into the Aleutians/past the International Dateline. Roth/Rausch