Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
346 AM EDT Sat Jun 18 2022

Valid 00Z Sun Jun 19 2022 - 00Z Sun Jun 26 2022

Latest guidance is agreeable and consistent in showing a typical
easterly trade pattern into next weekend with periodic
fluctuations in wind speeds along with variations in moisture
(though with mostly near to somewhat below average precipitable
water values) that will have some influence on
windward/mountain-focused showers. Mid-latitude high pressure will
settle well to the northeast of the area Sunday onward, with
surrounding flow supporting persistent and breezy trades. A broad
weakness over Hawaii this weekend into early next week should
support some localized rainfall enhancement. By early next week,
models continue to show good agreement that upper ridging should
build back southwestward toward/over the islands with the surface
high to the northeast weakening, leading to a lighter trend for
winds later in the week.

Santorelli