Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
744 AM EDT Fri Oct 07 2016

Valid 00Z Sat Oct 08 2016 - 00Z Sat Oct 15 2016

Much of the action remains north of the Hawai`ian island chain as
low-amplitude progressive mid-latitude flow prevails. In this
regime, heights should continue to build with a 594-dm mid-level
ridge setting up just west of the International Dateline. This
closed upper high is forecast to slowly migrate eastward keeping
the islands under the influence of persistent mid/upper-level
subsidence. At the surface, persistent surface ridging to the
north will favor a trade wind regime throughout the period. Some
strengthening may take place early/mid next week as the pressure
gradient increases slightly. Given the region is in a relative
minima on the precipitable water plots early in the period, expect
somewhat dry conditions through early next week except for perhaps
a few scattered diurnally/orographically forced showers. There may
be a slight uptick in such activity thereafter given the subtle
enhancement of the trades. 

Rubin-Oster