Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 815 AM EDT Thu Jun 13 2019 Valid 00Z Fri Jun 14 2019 - 00Z Fri Jun 21 2019 Weak upper-level troughing is expected to slowly fade as ridging move eastward to the north of Hawai'i this weekend. A stationary surface front to the north of the area will wash out west of the state next week. Upper ridging is forecast by the ensembles to strengthen near 37N/137W midweek next week (500mb height anomalies near +2.0 sigma) which will eventually favor troughing to its west, roughly along 170W next Wed/Thu. This pattern should maintain modest trades at 10-20 kts that may increase a bit next week as the sfc high strengthens to the northeast of the area. Deep moisture (PWs of 1.5-2.0 inches) should mostly remain south of the area though waves of higher moisture will pass through (primarily the Big Island and Maui) next week which favors an increase in shower activity. Otherwise relatively limited moisture should limit showers to windward and mauka areas. Fracasso