Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
1141 PM EDT Sun Sep 12 2021

Valid 00Z Tue Sep 14 2021 - 00Z Tue Sep 21 2021

A closed upper level low will retrograde back to the west north of
Hawaii during the middle/latter portions of the week. Favorable
trade winds through the period will support moderate windward and
mauka shower activity, especially Thursday onward as PW values
climb to 1.2-1.3 inches. Some more enhanced precipitation may
impact Hawaii later next week with the increased moisture, but
both the ECMWF and GFS continue to suggest the highest QPF should
stay west of the main islands.

Santorelli/Taylor