Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 803 AM EDT Tue Mar 24 2015 Valid 00Z Wed Mar 25 2015 - 00Z Wed Apr 01 2015 Frontal passage and cold front still on-track to migrate across Kauai around 25/00Z time frame---and deterministic 24/00Z ECMWF appeared to be the more progressive solution with its surge east-southeastward to Oahu/Maui by 27/06Z. The Canadian/GFS provide less impact---for the eastern half of the state. Beyond the 60-hour point---there were notable differences in the deterministic guidance across the mid-latitude Pacific. However, the differences do not significantly alter the pattern across Hawai'i. And for the most part, the differences only pertain to the timing of the Subtropical Trades (tracking their wax and wane in intensity) as a portion of the east central Pacific surface ridge migrates eastward towards the Mainland next week (days 4-6). Recommend an equal blend of the 24/00Z ECENS, NAEFS and GEFS means beyond day 4 to handle the structure of the Subtropical Ridge in the eastern Pacific. Vojtesak