Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
822 AM EDT Sun Oct 25 2015

Valid 00Z Mon Oct 26 2015 - 00Z Mon Nov 02 2015

Models and ensembles agree in maintaining weak surface flow this
weekend over the Hawaiian Islands in the wake of Olaf moving
staedily northeastward and away from the islands. Please refer to
the Central Pacific Hurricane Center (CPHC) for the latest
official forecasts for Olaf.

The tail end of a showery frontal boundary emanating from a
powerful low deepening across the north Pacific well north of the
islands will push through the state Monday. Deep layered
anticyclonic flow behind this front will build across the Island
chain through mid next week, with corresponding strengthening
trades.

Trades should begin to weaken Thursday ahead of the next front
pushing southeastward across the central Pacific. This front digs
underneath another and complex deep low system that includes
energy from the extratropical remains of Champi. These weakened
island trades should prevail and moisten into Saturday, with
possible re-strengthening late next weekend as high pressure
rebuilds over the mid-latitudes of the central Pacififc.

Schichtel