Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
119 AM EST Thu Dec 31 2020

Valid 00Z Fri Jan 1 2021 - 00Z Fri Jan 8 2021

The weather pattern over Hawaii and adjacent marine areas is
expected to be relatively benign over the upcoming week, with
light to moderate trades expected.  Both the GEFS and EC means are
in good overall synoptic scale agreement through early Wednesday,
and then the EC mean is indicating more of a col in the surface
high near 30 degrees north owing to a stronger frontal boundary
approaching.  Both indicate a weak upper level trough that will
likely be situated east of the Big Island by Friday and into
Saturday, followed by upper level ridging over the region by early
next week.  With the exception of the typical windward showers, no
major episodes of significant rainfall are anticipated at this
time.  However, there may be some enhanced northerly swells from
the strong low pressure systems over the North Pacific.

Hamrick