Hawaii Extended Forecast Discussion...amended
NWS Weather Prediction Center College Park MD
259 PM EDT Sat Apr 01 2017

Valid 00Z Sun Apr 02 2017 - 00Z Sun Apr 09 2017

The guidance is in good agreement over the Hawaii domain through
most of the forecast period, with both the EC mean and GEFS mean
indicating a synoptic upper level ridge progressing slowly
eastward across the region.  The operational GFS and ECMWF are
also in good agreement with their respective ensemble means during
this time.  The differences emerge near 40 degrees north, with the
GEFS mean slower with the surface low tracking eastward north of
Hawaii than the EC mean by the middle of next week.  A weak front
passes to the north of the islands Tuesday, but should not have
any significant affect on the weather across the state.  A second
boundary passes north of the islands later in the weak.  Given the
frontal passages to the north, the ridge weakens some and the
trade winds become weaker from Monday night into Thursday night,
before freshening out of the northeast late Friday. 

Hamrick