Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 830 AM EDT Thu Oct 01 2015 Valid 00Z Fri Oct 02 2015 - 00Z Fri Oct 09 2015 The 1/00Z forecast cycle essentially confirms and conforms to the current forecast philosophy for Hawai'i through day 5 (7/00Z). The deterministic GFS/ECMWF suggest the upper-level trough---descending southward and spreading in a west-to-east manner across Hawai'i (in/around 6/12z)---will attempt to entrain a deep tropical moisture/energy stream. On/after 6/12z...recommend a blend of the 1/00Z ECENS/GEFS. Given the current deterministic model cycle differences---for days 5-7...would tend to believe there is the potential for a prolonged period of unsettled weather (days 2-5). Trending drier---before the onset/occurrence of the window of 'maximum precipitation'... may not be the best approach given the 1/00Z ECENS/GEFS and NAEFS ensemble guidance. Vojtesak