Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
313 AM EDT Sun Jun 19 2022

Valid 00Z Mon Jun 20 2022 - 00Z Mon Jun 27 2022

Latest guidance is agreeable and consistent in showing a typical
easterly trade pattern through this week 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 after today/Sunday, 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 as well. By early this
week, models show the upper ridge should building back
southwestward over the islands with the surface high to the
northeast weakening as an upper closed low tries to retrograde
southwestward across the northeast Pacific. This should result in
a weakening and lighter trend for winds later in the week with
some southeasterly component next weekend influenced by a cold
front well to the north of the islands.

Santorelli