Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
707 AM EST Mon Jan 09 2017

Valid 00Z Tue Jan 10 2017 - 00Z Tue Jan 17 2017

Models and ensembles remain consistent and agreeable for the
forecast through the next seven days.  Eastern Pacific surface
high pressure will extend a ridge axis across and beyond the
islands.  Guidance suggests this ridge axis may drift a little
northward by next weekend/early next week.  Based on this
evolution, winds into late week should range from easterly or
east-southeasterly near the Big Island to southerly over the
northwestern islands.  Some areas may see sufficiently light trade
flow to promote land and sea breezes.  Then from next weekend into
early next week winds may become a little more uniform from the
east/southeast.

Multiple fronts will approach from the northwest but not reach the
state.  As forecast in recent days the first should achieve its
greatest southeastward extent around 12z Tuesday before retreating
northward.  Then another front will come into the picture around
Thursday-Friday.  A trailing system will bring a third front as
close as about 20N latitude during the weekend before it lifts
northward due in part to a strengthening ridge over/southwest of
the state late in the period.  Within the relatively dry overall
pattern the northwestern islands may see a little rainfall
enhancement Thursday-Friday in association with a pocket of
moisture ahead of the late week front.

Rausch