Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
208 AM EST Sat Dec 11 2021

Valid 00Z Sun Dec 12 2021 - 00Z Sun Dec 19 2021

Models and ensembles still reasonably agree that high pressure
will establish itself to the north of Hawaii, with drier
conditions and a more typical trade wind pattern over the state
into early next week. This will equate to moderate to breezy
trades and some scattered windward and mountain showers, but no
widespread rainfall under upper ridging. By Tuesday and Wednesday
of next week, guidance shows a weakening cold front slowly passing
southward through the state. This may lead to a temporary period
of slightly enhanced moisture and some increase in showers. The
upper ridge may slowly erode later next week as a weakness aloft
shifts over the state. This may act to pool modest shower fueling
moisture, but longevity and effect/reformation is uncertain
through these longer time frames into next weekend.

Schichtel