Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 808 AM EDT Tue Jul 07 2015 Valid 00Z Wed Jul 08 2015 - 00Z Wed Jul 15 2015 The 7/00Z forecast cycle guidance (ECENS and GEFS) were very good agreement across the mid-latitude Pacific through day 6 (14/00Z) --- but their respective deterministic runs were in less than desired 'synch' after 11/00Z in the Tropics and Subtropics. The 7/06Z GEFS would be an even better solution blended with the 7/00Z ECENS as a baseline forecast solution through the day 7 (15/00Z) forecast period. The active region of disturbed weather concerning Hawai'i --- invof 13N 135W (on most recent 7/1130Z satellite imagery) --- was handled reasonably well at the 500mb level by the deterministic 7/06Z GFS and 7/00Z ECMWF until 11/00Z. Once the disturbance migrates northwest of the Islands --- these pieces of deterministic guidance offer some differences regarding forward motion of the mid-level energy. But for a mid-point day 5 forecast position (12/12Z) --- these deterministic solutions are not far off the mark. Likewise, the favored blend of the means supported an area of disturbed weather in the mid-level atmosphere invof 15N and the Dateline for day 6 and its westward migration on day 7. Vojtesak