Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
245 AM EST Tue Dec 31 2019

Valid 00Z Wed Jan 01 2020 - 00Z Wed Jan 08 2020

Breezy trade winds over Hawaii should weaken and shift towards the
southeast on Thursday. Guidance shows a shortwave sliding north of
the state on Thursday, which will push a cold front through much
of the island chain from Northwest to Southeast Thursday-Friday.
Both the GFS and ECMWF suggest the deeper ITCZ moisture will be
pulled northward east of the state resulting in merely modest
showery activity with the frontal passage, though some enhanced
precip across windward locations possible. The front should weaken
over the state by Saturday, with gusty easterly winds returning by
Sunday. Winds look to get quite gusty by early next week with
strong high pressure building north of the state and any
precipitation chances confined to the east and northeast facing
coastlines, especially the Big Island and Maui.

Santorelli