Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 809 AM EDT Mon Aug 29 2016 Valid 00Z Tue Aug 30 2016 - 00Z Tue Sep 06 2016 ...Hurricane Madeline to pass very near the Big Island midweek... ...Hurricane Lester to affect the area by this weekend... Large scale pattern supports a dual tropical threat to the region this week as an upper high strengthens between Hawai'i and the Gulf of Alaska. This will keep the easterlies in tact along 20N, though small perturbations in the flow may steer Madeline just south of the Big Island and Lester just north; however, their effects will be felt over the island chain. Heavy rainfall may become a bigger threat from Lester than Madeline as a track north of the islands would likely bring in a southerly surge of tropical moisture through the region. Rainfall chances will be highest late Wednesday through Thursday with Madeline and then Saturday through Monday for Lester. Please see the Central Pacific Hurricane Center and the National Hurricane Center for the latest information regarding the forecast track and also WFO Honolulu. Fracasso