Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
700 AM EST Wed Dec 21 2016

Valid 00Z Thu Dec 22 2016 - 00Z Thu Dec 29 2016

Latest guidance maintains good continuity and agreement for the
upcoming week's forecast.  Two mid-latitude surface highs will
support trades through the period.  The first high will track
north of the islands along 40N around Thursday and then weaken as
it tracks southeastward.  The second, behind a front that
approaches but does not reach the islands Friday-Saturday, should
track a few degrees of latitude farther south than the first high.
 As a result trades will likely be stronger early next week. 
Trades may be a little less brisk by Wednesday as the high
continues eastward.  Expect most shower activity to be light to
locally moderate and terrain-focused.  Precipitable water values
should start the period in the 1.25-1.50 inch range and gradually
decline closer to one inch for late Sunday onward, perhaps
slightly higher at times over the Big Island.

Rausch