Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
805 AM EDT Sat Sep 05 2015

Valid 00Z Sun Sep 06 2015 - 00Z Sun Sep 13 2015

A lingering north-south band of enhanced moisture may continue to
support pockets of locally heavy rainfall over the northwestern
islands during this weekend.  Drier air to the east, only relative
given precipitable water values still around 1.75 inches, will
briefly move in and lead to a lighter trend for rainfall.  Into
early next week expect winds to be light enough to allow for some
land/sea breeze influence on what shower activity does occur.

During Tue-Thu the primary focus will be on Hurricane Jimena which
is currently east of the islands and forecast to track northwest
and then west-southwest, with gradual weakening over the next few
days.  Consult Central Pacific Hurricane Center (CPHC) products
for the latest information on Jimena.  As per the 0900 UTC
advisory the track of Jimena should remain north of the islands,
with the 06z GFS trending close to the 00z ECMWF versus the
farther south 00z GFS.  This is the second consecutive day in
which the 06z GFS has trended toward consensus away from an
extreme southern track in the 00z run.  Even with the relatively
northern track there is potential for a period of greater deep
moisture and heavier rainfall from midweek onward.

After the passage of Jimena, the combination of expanding
influence of eastern Pacific high pressure and a rapidly
sharpening central Pacific frontal boundary associated with an
amplifying trough aloft should lead to brisk southeasterly winds
by next Fri-Sat.

Rausch