Hawaii Extended Forecast Discussion...Corrected
NWS Weather Prediction Center College Park MD
852 AM EDT Wed Jun 01 2016

Valid 00Z Thu Jun 02 2016 - 00Z Thu Jun 09 2016

Models show good overall agreement with near average spread within
the ensembles through the week, next weekend, and into early next
week.  From Wednesday into Friday, an upper low/TUTT near 25-30N
and 140W lifts out early and decouples from an easterly wave which
migrates nearly to the Big Island Thursday night.  Thereafter, the
dominant synoptic feature will be the amplifying long wave trough
between 140W and 150W from Friday night onward, with its
progression and slow passage allowing for a frontal zone/shear
line to migrate through Hawai'i late Friday into Saturday,
reinforcing surface troughing to the east of the state. 

The net result is fairly weak trades through Sunday before high
pressure north of the islands strengthens thereafter, which should
strengthen the east to east-northeast surface flow.  As
precipitable water values pool in the archipelago, rain chances
should increase from late Saturday onward, peaking from late
Monday through Tuesday.

Roth