Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
709 AM EST Fri Jan 05 2018

Valid 00Z Sat Jan 06 2018 - 00Z Sat Jan 13 2018

Models and ensembles agree to maintain a relatively quiet weather
pattern across Hawai'i into early next week under the influence of
a ridge of high pressure. Moderate mean trade flow offers below
normal moisture and limited windward rainfall potential. The best
chance for a few windward showers will exist this weekend for the
southern islands as impulse energy digs on the eastern periphery
of the mid-upper level ridge. Models suggest the potential for a
frontal boundary to approach the Islands by Wed-Thu as an
upper-level shortwave passes north of the state. The front should
result in a modest increase in moisture/shower activity, with the
potential for some brief disruption of the trades as well. Any
disruption to the trades appears short-lived, however, as the
models show some consensus that the front should wash out quickly
after reaching the Islands. In the wake of the front, models show
high pressure and dry air once again returning to Hawai'i.

Ryan