Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 830 AM EDT Sat Oct 15 2016 Valid 00Z Sun Oct 16 2016 - 00Z Sun Oct 23 2016 The anomalously strong upper high over the islands will gradually weaken the next few days as moisture from the remnant tropical wave near 140W reaches the island by the middle of next week. Sensible weather changes over the next week will remain minor under this regime with trades remaining mostly light. By next Friday, models are in above average agreement in allowing a cold front to move across the islands as another strong upper trough develops over the Gulf of Alaska. Passage of the cold front should be associated with increasing northeasterly flow. James