Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
730 AM EST Mon Dec 05 2016

Valid 00Z Tue Dec 06 2016 - 00Z Tue Dec 13 2016

...Wet weather to continue across the state of Hawai`i

With a persistent mid/upper-level ridge anchoring the subtropical
eastern Pacific, general southwesterly flow will dominate across
the Hawai`ian island chain. This is forecast to keep conditions
wet for much of the week, particularly across the southern most
islands, where the highest precipitable water air pools over the
region. Recent runs of the European model show above 2 inch values
across the Big Island with even some local maxima possibly
approaching 2.25 inches. While mid-latitude solutions vary
considerably with placement and timing, the general idea of
mid-level southwesterly flow is a common solution suggesting
reasonably high confidence in the synoptic regime. Thus, expect a
persistent threat for rainfall throughout the period accompanied
by the usual trade wind driven showers given occasionally moderate
trades this week.


Rubin-Oster