Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
717 AM EST Fri Jan 08 2016

Valid 00Z Sat Jan 09 2016 - 00Z Sat Jan 16 2016

The upper pattern across the mid-latitudes will be rather active
featuring a series of low amplitude features tracking west to
east. While the core of stronger height falls should remain north
of the island chain, the attendant frontal zones are noted to
affect the region. Throughout mid-January, it appears at least
three boundaries cross into Hawai`i with most gradually shearing
out in time. The usual trade wind regime appears to only be in
place across the Big Island as the approaching boundaries
generally remain just to the north. Regarding the precipitation
threat, the best chances occur with each frontal passage,
particularly over the northern half of the state. Meanwhile, to
the south, showers may spawn during periods of easterly flow as
precipitable water values do spike into the 1 to 1.25 inch range
throughout the forecast.


Rubin-Oster