Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 812 AM EDT Mon Jun 29 2015 Valid 00Z Tue Jun 30 2015 - 00Z Tue Jul 07 2015 Models and ensemble means display no large scale disagreements regarding the pattern over/near the state during the period. During the first half of the forecast two individual surface reflections associated with the central Pacific mean trough aloft should lead to some disruption of trade flow. As a result land/sea breeze influence on shower activity should be greater than average. At the same time a surface wave/trough initially over or a little west of 145W longitude should bring added moisture to the region in the Tue-Thu time frame, somewhat more over the Big Island versus locations farther northwest. Expect the potential for some enhancement of rainfall but today's model runs generally show precipitable water values increasing somewhat less than runs from 24 hours ago. After Thu eastern Pacific high pressure gradually drifting westward should bring a return of light to moderate trades with terrain-focused rainfall. Amounts should be in the lighter half of the spectrum given consensus toward PWATs trending to or below 1.50 inches. Rausch