HONOLULU (KHON2) – The trade wind belt remains weakened and suppressed south of the islands leaving the forecast area in the zone of light winds and subsidence equatorward of an extended Pacific jet.
The guidance has long advertised a kink in the mid-latitude flow developing this weekend, and this is now evident well west of the area near 40N/160E.
This buckle in the flow will is evolving into progressive mid-latitude ridge that will amplify as it transits the Pacific during the next several days leading to surface pressure rises over and north of the Hawaiian Islands.
This will in turn allow trades to rebound back into the area no earlier than Sunday night and and continuing through at least Monday.
A few additional showers can be expected windward and mauka during this time, but high stability and a dry airmass will significantly limit shower coverage and intensity.
High pressure then continues its eastward trek thereby returning the islands to a weakened trade wind state for the second half of the week.