Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
333 AM EDT Sat Mar 27 2021

Valid 00Z Sun Mar 28 2021 - 00Z Sun Apr 04 2021

The col that currently exists in the subtropical ridge north of
Hawaii will gradually dissipate through this weekend, as the
surface low to the north weakens and the surface high builds back
in across the mid-latitudes.  The ensemble means suggests a new
inverted trough develops near 170 degrees west by Monday, and
potentially evolves into an upper low near 30 degrees north by
mid-week. 

A more typical trade wind pattern should prevail after this
weekend with showers mainly confined to windward regions, and
continue through much of next week.  Easterly flow of 15-25 mph
with higher gusts will be likely, with the greatest coverage of
showers across the windward terrain of the Big Island.  The heavy
rainfall associated with the developing trough mentioned earlier
should remain well west of the state.

Hamrick