Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
244 AM EST Fri Dec 1 2023

Valid 00Z Sat Dec 2 2023 - 00Z Sat Dec 9 2023

...Heavy Rain and Flash Flooding continuing through Saturday...

A Kona low situated over the far northwestern Islands will
continue to bring the potential for widespread heavy rainfall and
possibly strong thunderstorms through Saturday to much of the
state. Heavy snow will also be possible in the higher terrain of
the Big Island. Flooding and flash flooding are a concern as
precipitable water values at or slightly above 2 inches on Friday.
 By this weekend, the upper low should weaken and slowly drift
north of Hawaii with rainfall trending lighter as a drier airmass
advects into the region.

An upper ridge builds over the region next week, bringing back
gusty easterly trades.  Overall the guidance is improving on the
specifics of the Kona low, but still struggle some with exact
rainfall amounts/locations.  A general model blend should suffice
for the entire period and help smooth out these details.

Hamrick