Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
750 AM EDT Sun May 14 2017

Valid 00Z Mon May 15 2017 - 00Z Mon May 22 2017

The subtropical ridge should hold sway over Hawai'ian weather
through Tuesday.  Thereafter, a mid-level trough moves closer to
the archipelago bringing a weak front/shear line into the
Papahanaumokuakea National Marine Monument Wednesday into Sunday
which should weaken the Trade Winds during that time frame.  The
guidance shows better agreement with the deep cyclone expected to
move through the central Pacific than seen this time yesterday. 
Precipitable water values should be close to normal -- 1.25" --
through the period which should allow for upslope showers within
the Trade Wind regime.

Roth