Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
703 AM EST Thu Dec 24 2015

Valid 00Z Fri Dec 25 2015 - 00Z Fri Jan 01 2016

Models and ensembles reasonably agree that an upper low now east
of the Big Island will continue to slowly move eastward over the
next few days, but an upper trough axis is forecast to linger over
the region through the weekend and early next week. At the
surface, a frontal boundary will approach the NW islands on
Christmas day, but weaken as high pressure moves in behind it
along 33N. This should bring in breezy conditions to the islands.
PW values are expected to rise slightly ahead of the front or
shear axis and then decrease after Monday. Rainfall should be
light to modest, favoring windward/terrain areas. Later, mid-upper
level trough passage to the north of the state in active flow
should again allow a surface front with enhanced showers approach
the NW islands heading into the New Year.

Schichtel