Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
818 AM EDT Tue Jun 17 2014

Valid 00Z Wed Jun 18 2014 - 00Z Wed Jun 25 2014
Short Term...The 17/00Z GFS-ECMWF solutions maintained decent
continuity and seem to reasonably handle the sensible weather
aspects of the Hawai'i forecast area through Thursday evening.  

Medium Range...The 17/00Z GFS-ECMWF cycle guidance emphasized a
subtle 'repositioning' of the surface ridge pattern in the central
Pacific. The upshot of this 'repositioning' is the substantial
weakening of the surface high off the west coast of the
Mainland...and the emergence of a strengthening cell of high
pressure invof 32N 166W. By 23/12Z...this surface high is expected
to migrate slowly east-southward and serve as an anchor point
along 30N for the western flanks of broad...stable surface ridging
in the subtropical Pacific. Aloft...the 17/00Z GEFS/ECENS means
support the notion of a deep-layered ridge through days
5-7---along 30N and the Dateline. This may promote the
intensification of this western 'anchor point' rather than weaken
it...as the deterministic solutions suggest.

Vojtesak