120
FXHW01 KWNH 120744
PMDHI

Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
344 AM EDT Mon May 12 2025

Valid 00Z Tue 13 May 2025 - 00Z Tue 20 May 2025

Hawaii will generally be on the southern periphery of a large
surface high that will initially be north of the state, and then
becoming positioned more to the northeast by the end of the week.
The ensemble means suggest a col will develop within the
subtropical ridge axis by next weekend north of the far
northwestern Islands with a weakening cold front approaching that
region by next Sunday.

Low level trade wind flow should generally be out of the east most
days, with perhaps some ESE component next weekend. The usual
terrain enhanced showers can be expected most days across the
Islands, with perhaps a slight increase in showers by next Monday
across the northwestern Islands, but no major rainfall events are
expected over the next week.

Hamrick