Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
702 AM EST Tue Dec 20 2016

Valid 00Z Wed Dec 21 2016 - 00Z Wed Dec 28 2016

Most guidance shows similar ideas at the surface and aloft through
the period.  A series of mid-latitude surface highs will maintain
trades at moderate to brisk levels.  High pressure initially to
the north/northeast of the state will be replaced by a high
passing by to the north around Thursday.  Behind that high will be
a front that should approach but not reach the area.  Then the
next high in the series tracking a little south of its predecessor
will likely support trades on the brisk side of the spectrum for
Sunday-Tuesday.  In general expect rainfall to be in the light to
moderate range and focused over windward terrain.  Around
Wednesday-Thursday the combination of a weak upper level feature
and somewhat above average precipitable water values may provide a
little enhancement for activity that does develop.  PWATs should
decline to near or slightly below normal values after Thursday.

Rausch