Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 835 AM EDT Wed Sep 14 2016 Valid 00Z Thu Sep 15 2016 - 00Z Thu Sep 22 2016 No big changes to the forecast in that a very moist period is on tap for the islands through Saturday as a positively tilted trough with embedded impulses aligns just west of the islands through the first half of the weekend before the system continues westward away from the islands. GFS forecast precipitable water values increase from elevated values of 1.5 to 1.75 today to greater than 2 inches by late Friday into Saturday beofre dropping back dramatically on Sunday. It continues to appear that Orlene or its remnants will interact with a trough as it approaches 140W which could steer it northward minimizing any threat to the islands. Kocin