Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
258 AM EST Tue Dec 12 2023

Valid 00Z Wed Dec 13 2023 - 00Z Wed Dec 20 2023

On Tuesday, winds are expected to back a bit to a more
northeasterly direction and strengthen ahead of a cold front
approaching the state. Moisture is forecast to pool ahead of this
front and bring some enhanced rain chances to the northwestern
islands late on Tuesday. An anomalously deep trough aloft and a
high pressure center at the surface will push this cold front
across the state from northwest to southeast on
Wednesday-Thursday, with shower chances pressing through ahead of
it. Behind the front, drier dewpoints are forecast while
northeasterly winds will be rather strong. Breezy northeasterly
winds may continue into Friday before gradually decreasing in
magnitude into the weekend while veering a bit to a more easterly
direction. Windward and mauka showers are possible, though may be
isolated given the below normal moisture in place. More typical
trades and moisture levels are forecast to return early next week.

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