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Hawaii Extended Forecast Discussion
(Latest Discussion - Issued 1225Z Nov 15, 2018)
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Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
725 AM EST Thu Nov 15 2018

Valid 00Z Fri Nov 16 2018 - 00Z Fri Nov 23 2018

Expect some increase in the trade winds over the next day or two
ahead of upper troughing building over the region by this weekend.
There is good agreement between models and ensembles that this
troughing and the associated cold front will usher in a moist and
unstable air mass over the island chain. This will increase
precipitable water values and showery activity, with thunderstorms
and locally heavy rainfall possible, especially for windward
locations. Surface high pressure builds in behind the system north
of the state which will dry things out, but gusty trade winds may
continue through the middle of next week.