Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
346 AM EDT Fri Apr 02 2021

Valid 00Z Sat Apr 03 2021 - 00Z Sat Apr 10 2021

Guidance agrees with most aspects of the forecast over the next
seven days.  A front dropping into the area by this weekend should
provide some shower enhancement.  After the weekend expect the
persistent pattern of northwesterly flow aloft, with the state in
the southwestern periphery of mean troughing and a ridge to the
northwest, to favor precipitable water values below climatology
and fairly light rainfall.  Trades will trend stronger from the
weekend into early next week as central/east-central Pacific high
pressure builds southward.  Then winds should stabilize at brisk
to strong levels for a time before possibly relaxing somewhat
during the latter half of the week.  The trade flow will tend to
favor windward/mountain focus for precipitation with some moisture
occasionally straying to other locations.  One guidance comparison
of note is that the GFS/GEFS mean stray westward of most other
solutions with major Pacific features by late next week.  Favoring
a tilt more toward the ECMWF/ECMWF mean would yield trades with a
bit more of an easterly component than the GFS/GEFS mean.      

Rausch