Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
709 AM EST Fri Jan 06 2017

Valid 00Z Sat Jan 07 2017 - 00Z Sat Jan 14 2017

At least through midweek the overall forecast shows good
continuity from yesterday.  Northerly to northeasterly winds
should prevail through Saturday between low pressure well to the
northeast of the state and a north-south oriented surface ridge to
the west/north.  Then high pressure will become established to the
east-northeast of the islands, turning winds more from the
southeast on average.  There is now better agreement from guidance
that a front approaching the state Monday-Tuesday should stall
before reaching the northwestern islands.  This front will then
lift northward in flow ahead of west-central Pacific low pressure.
 Most rainfall will likely be on the light side as precipitable
water values remain near to somewhat below normal through midweek.
 Toward Thursday-Friday there is some spread in the guidance
regarding a potential increase in moisture well ahead of a distant
front, with GFS/GEFS-based solutions and the old 12z ECMWF
generally showing higher PWATs than the 00z ECMWF.

Rausch