Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
804 AM EDT Thu Jun 09 2016

Valid 00Z Fri Jun 10 2016 - 00Z Fri Jun 17 2016

Models and ensemble means agree well through about next Mon-Tue. 
Surface high pressure to the north of the state will drift
eastward into Sat, likely weakening trades a bit late this week. 
Then upstream high pressure will merge with the leading high and
strengthen so expect moderate to brisk winds from late weekend
into next week.  Meanwhile an upper level feature tracking around
the southern side of an upper high should approach/reach the state
during the weekend and early next week.  As a result some
enhancement is possible for rainfall that should favor but not be
fully limited to windward locales.  Toward next Tue-Thu the
00z/06z GFS show lower heights/more upper troughing over the
region than other models/ensemble means.  This difference in the
GFS does not affect the overall surface pattern significantly but
weakens the surface gradient a bit relative to consensus.  Prefer
one or more selections among the 00z GEFS/NAEFS means and 00z
ECMWF/ECMWF mean for the upper level and surface forecast by next
Tue-Thu.

Rausch