Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
803 AM EDT Wed Oct 04 2017

Valid 00Z Thu Oct 05 2017 - 00Z Thu Oct 12 2017

Upper level ridging will continue to build across the Hawaiian
islands the next couple of days which should allow for mostly dry
conditions and rather brisk easterly trade winds of 20 to 30 knots
through the rest of the week. By late this week, all deterministic
and ensemble guidance continue to advertise a deep cut off upper
low near 140 west on Friday, drifting west-southwestward before
becoming absorbed into troughing to the north by early next week.
Even though the upper low should remain well to the northeast of
Hawaii, the resultant falling heights across the central Pacific
should push a cold front southward towards the islands, with a
modest increase in PWATs along and ahead of the boundary. Expect
showery activity to increase across particularly the
northern/central Islands by the weekend, with some locally
enhanced activity possible. Early next week, the front appears to
briefly stall before eventually dissipating across the state which
should allow for moisture and showers to stick around into the
middle of next week.

Santorelli