Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 230 AM EDT Sat Jul 18 2020 Valid 00Z Sun Jul 19 2020 - 00Z Sun Jul 26 2020 An upper-level ridge is forecast to persist across Hawaii through next week. Initially light trades are expected to gradually increase through the weekend, becoming breezy. A pocket of moisture crossing the state through Sunday may also bring some modest increase in typical windward/mauka shower activity. A broad weakness in the ridge is forecast to cross the state from east to west next Tuesday through Friday. The latest GEFS shows 500 hPa height anomalies of -1 to -2 standard deviations in association with this feature, which should enhance instability across Hawaii a bit. An area of deeper moisture should cross Hawaii late next week, with some increase in shower activity by Thu-Fri, before upper ridging and drier air once again move in next weekend, with breezy trades becoming reestablished. Overall, model/ensemble guidance showed relatively good agreement across Hawaii through the next week, and a general model blend is preferred. Ryan