Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
255 AM EST Mon Dec 4 2023

Valid 00Z Tue Dec 5 2023 - 00Z Tue Dec 12 2023

A col in the subtropical ridge will be in place north of the state
through Monday night, and then the subtropical high will build in
between 30-35 degrees north by mid-week.  However, this high will
not linger and will east as a strong storm system between 35-40
degrees north approaches with a trailing cold front reaching the
far northwestern Islands by late week, with the ensemble means
similar regarding timing.

Trade winds should become noticeably stronger out of the east to
northeast by Tuesday and Wednesday with the surface high passing
north of the state.  Some veering of the flow to the southeast is
likely going into the end of the week with the frontal boundary
approaching from the northwest.  Rainfall should be in the form of
favored upslope showers with the deepest moisture remaining well
to the south.

Hamrick