Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
819 AM EDT Sat Oct 08 2016

Valid 00Z Sun Oct 09 2016 - 00Z Sun Oct 16 2016

While an active storm track remains well to the north across the
mid-latitudes, upper ridging will continue to dominate the pattern
for the Hawai`ian island chain. A building 594-dm ridge should set
up west of the International Dateline with gradual eastward
expansion in time. At the surface, a west-east oriented surface
high sets up north/northwest of the state with a gradual increase
in the pressure gradient leading to enhancement of the
climatological trade winds. As such, there should be an uptick in
the shower activity, particularly over the favored upslope terrain
and along local mesoscale boundaries. The limiting factor is the
lower amount of tropospheric moisture per forecast precipitable
water values.


Rubin-Oster