Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
719 AM EST Fri Feb 17 2017

Valid 00Z Sat Feb 18 2017 - 00Z Sat Feb 25 2017

Upper ridging to the east/southeast of the Big Island will
continue to weaken as a shortwave slides east along 30-35N on
Saturday. This will support a cold front pushing through the area
with winds increasing from the north and then northeast and remain
elevated next week as a surface high slides eastward along 30N.
The 00Z ECMWF was still just a bit quicker than the 00Z-06Z GFS
with the front but a middle ground solution should suffice.
Precipitation appears to be rather light except for over favored
terrain areas as most of the forcing stays well north. Post-FROPA,
heights are forecast to slowly rise as another shortwave deepens
to the northeast of the state, likely closing off near 37N/154W by
early Wednesday. This may sink southward along 150W but the
tropical moisture plume should remain southeast of the area.


Fracasso