Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
232 AM EST Thu Dec 09 2021

Valid 00Z Fri Dec 10 2021 - 00Z Fri Dec 17 2021

Quieter weather is expected across Hawaii through the weekend into
next week, after a kona low that has now shifted westward away
from the state caused rainfall totals of over a foot and
widespread flooding impacts. High pressure is establishing itself
to the north of Hawaii, drying out the pattern and leading to a
more typical trade wind pattern. This will mean moderate to breezy
easterly winds and the possibility of scattered windward and
mountain showers, but no widespread rainfall expected. By
approximately Tuesday of next week, model guidance (including the
latest GFS and ECMWF runs and the EC ensemble mean) shows a weak
cold front slowly passing through the state. This could lead to a
temporary period of slightly enhanced moisture in the front's
vicinity, which may increase shower activity somewhat. Breezy
winds are possible behind the cold front.

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