Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
326 AM EDT Tue Aug 03 2021

Valid 00Z Wed Aug 04 2021 - 00Z Wed Aug 11 2021

Strong upper ridging to the west of Hawai'i will continue westward
through the week. Heights will remain mostly above normal through
the period, though perhaps slightly below normal early next week.
With mid-level moisture remaining rather low (PWs around 1-1.5"
and 700-400/300-850mb RH 5-20%), most of the area will remain
drier than normal and see generally lighter windward/mauka
showers. Trades will remain breezy through the week into the first
part of the weekend as the surface high to the northeast dips
toward 33N Wed-Thu then back toward 40N this weekend and 45N next
Tue. Farther east, Hurricane Hilda and the remnants of T.D. Nine-E
may push toward the area but there remains a large amount of
spread in track and evolution (including possible interaction
between the two systems/sources of moisture). By next week the
moisture associated with the system(s) may approach the longitude
of the Big Island but it is unclear if it will pass to the north
or not. 


Fracasso