Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 803 AM EDT Sat Aug 02 2014 Valid 00Z Sun Aug 03 2014 - 00Z Sun Aug 10 2014 Thought the 2/00z forecast cycle offered better results over the mid-latitude Pacific, especially within the day 4-6 period. The point of model contention does continue to be with a transfer of energy and moisture from the southwestern tropical Pacific to the mid-latitudes. Downstream and ALOFT, into the Aleutians and Gulf of Alaska--where a broad-scale upper-level ridge dominates, liked how the 1/12z GFS, 2/00Z GFS and 2/00Z ECMWF deterministic runs handled the transfer of energy across the eastern Aleutians. The undercutting energy did offer some spread at the surface with a scenario like the 2/00Z GFS being a better fit to the ensembles vs the ECMWF. The 2/00Z ECENS and GEFS means appeared to handle the general flow across the tropical and subtropical Pacific with little break in continuity. The 2/00Z deterministic ECMWF-GFS fit the progression of 'Iselle', a distinct sensible weather feature approaching the Big Island from the southeast on Thursday/Friday. Its sensible weather impacts spreading westward across Lanai, Maui and Oahu for Friday (day 6) and Saturday (day 7). A blend of these four pieces of guidance looked very close to the official track forecast on days 3-4. Of interest and note, there will be a second disturbance lagging behind 'Iselle' between 16N-18N along 146W around mid-point day 7 (~9/12Z). For additional information, please consult/refer to the latest updates and bulletins from the Central Pacific Hurricane Center and National Hurricane Center. Vojtesak