Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
213 AM EDT Sun Jul 19 2020

Valid 00Z Mon Jul 20 2020 - 00Z Mon Jul 27 2020

A broad upper-level ridge is forecast to persist across the
Central Pacific through the upcoming week. Breezy trades are
expected to continue through early in the week, before weakening
somewhat by Tuesday, and strengthening again later in the week. A
broad weakness in the ridge is forecast to cross the state from
east to west Tuesday through Friday. The GEFS continues to shower
500 hPa height anomalies of -1 to -2 standard deviations in
association with this feature, which should enhance instability
across Hawaii somewhat. An area of deeper moisture may cross
Hawaii next weekend, with some increase in shower activity
possible. Overall, model/ensemble guidance showed relatively good
agreement across Hawaii through much of the upcoming week, and a
general model blend is preferred.

Ryan