Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
707 AM EST Sun Jan 08 2017

Valid 00Z Mon Jan 09 2017 - 00Z Mon Jan 16 2017

Today's guidance maintains good continuity and agreement for the
expected pattern through next weekend.  The north-south surface
ridge along 160W longitude is about to split at mid-latitudes with
the southern part forming a high that settles east-northeast of
the state for the rest of the forecast period.  A surface ridge
will extend from this high across the islands, on average
supporting winds from the east or southeast near the Big Island
and from the south or southwest over the northwestern islands. 
There may be periods of light/variable winds at some locations. 
Fronts will remain to the northwest of the state.  The first is
still scheduled to reach its closest proximity around 12z Tuesday
before retreating northward.  The next front should make its
closest approach late in the week and drift a little northward
during the weekend.  GFS/ECMWF runs generally agree that flow
ahead of this front may draw a pocket of moisture across the
northwestern islands in the Thursday-Friday time frame.  Otherwise
continue to expect relatively light rainfall with precipitable
water values at near to below normal levels.

Rausch