Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 813 AM EDT Sat Oct 26 2019 Valid 00Z Sun Oct 27 2019 - 00Z Sun Nov 03 2019 Weak ridging over the area will give way to lower heights and modest troughing for most of next week, centered right along 155W. Heights may rise a bit by the start of next weekend ahead of a deeper mid-latitude trough near 170W per the ensembles. Consensus/ensemble approach seemed to suffice. Frontal boundary about 300 miles to the northwest of the region will stay to the northwest of Hawai'i as the associated trough lifts northeastward toward Alaska. A fairly typical trade wind pattern is expected to persist through the week, with mostly windward/mauka showers. The 00Z ECMWF was more aggressive to bring in higher precipitable water values from the southeast to the Big Island vs the GFS which was farther east. This may enhance shower/rain activity around Wednesday. By next Fri/Sat, trades may relax a bit as the pressure gradient weakens in advance of the upstream trough. Fracasso