Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
338 AM EDT Fri Jul 16 2021

Valid 00Z Sat Jul 17 2021 - 00Z Sat Jul 24 2021

Guidance agrees that high pressure initially north of the state
will quickly give way to a stronger high to the northwest,
supporting persistently strong trades through the period along
with rainfall focus over windward/mountain areas--but occasionally
straying to other locales.  An upper level low/inverted trough
along with somewhat higher precipitable water values will cross
the region from east to west during the weekend.  These could
combine to increase rainfall coverage and amounts briefly.  For
most of next week expect precipitable water values to fluctuate
within half to one standard deviation on either side of normal. 
Some degree of upper ridging should build into the area early-mid
week after departure of the weekend upper feature but specifics
aloft become more ambiguous toward Thursday-Friday.

Rausch