Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
308 AM EST Sat Dec 17 2022

Valid 00Z Sun Dec 18 2022 - 00Z Sun Dec 25 2022

The next upper low/trough over the central Pacific develops north
of the islands, near 35 degrees north, on Monday with a well
defined cold front passing through the state.  This is expected to
result in gusty southerly winds that'll veer to the northwest and
then west by Tuesday morning, with gusts over 30 mph at times. 
There will also be a surge of deep tropical moisture northward
ahead of the front starting Sunday night and lasting through early
Tuesday morning, with the potential for 3-6 inches of rainfall
across the windward terrain and even some risk of flooding across
vulnerable areas.  This low pressure system then lifts northward
by midweek, with a weak surface high trying to build in across the
Islands by the end of the week.  The result will be much drier
conditions to follow, with generally light east to southeasterly
winds.
 
Hamrick