Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
256 AM EDT Wed Sep 22 2021

Valid 00Z Thu Sep 23 2021 - 00Z Thu Sep 30 2021

A shortwave trough will progress westward across the region early
on then give way to a relatively benign stretch of weather as
surface high pressure and upper level ridging builds in. By late
in the weekend and into early next week, another inverted trough
will pass south of the Islands, which is likely to bring an
increase in moisture and lift with higher chances of rainfall. 
Aside from that, easterly flow on the order of 15 to 20 mph can be
expected much of the week/weekend with windward showers.

Taylor