Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
707 AM EST Thu Jan 05 2017

Valid 00Z Fri Jan 06 2017 - 00Z Fri Jan 13 2017

With time mid-latitude Pacific flow should begin to show some
progression relative to the blocky pattern in place through the
weekend.  From now into Saturday expect winds to have a northerly
component as the state will be between a front to the
east/southeast and surface ridge axis to the west/northwest.  As a
front approaches from the northwest late weekend into early next
week, expect high pressure to become oriented more east-west over
Hawai'i leading to lighter winds and more potential for land/sea
breezes.  For the first half of next week this front is still an
issue of contention in the guidance, with the 00z/06z GFS and 00z
GEFS mean bringing it farther southeast into the islands than most
other solutions that keep it just to the northwest.  At this time
would recommend at least a compromise between the GFS and ECMWF
clusters.  Toward Wednesday-Thursday winds may turn more from the
southeast/south as a system tracks to the northwest and north of
the state.  By late Thursday the 00z/06z GFS are on the fast side
of what is a fairly large model/ensemble envelope for that system.
 Overall rainfall should be on the lighter side of the spectrum
during the period.  Expect driest precipitable water values Friday.

Rausch