Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
756 AM EDT Sat Jun 17 2017

Valid 00Z Sun Jun 18 2017 - 00Z Sun Jun 25 2017

The forecast has not changed much for the next week, as a closed
upper low and weakness between two very large subtropical ridges
over the Pacific and currently near the western Islands will
retrograde west before more general trades return. By doing so, a
slightly elevated moisture pool over the state of 1.25"
precipitable water values exist within the best upper difluence
aloft. This may result in more shower activity than just the
typical activity from mean easterly component and trades through
Sunday/Monday. This feature aloft will then feel the influence
from a digging upper trough approaching from the central Pacific
to not only allow the vorticity to gain latitude but eventually
merge/phase with the upper trough. This amplified upper trough
will then eventually lift out from northwest of the islands and
most of the global models allow light to moderate trades to
return. 

Musher