Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 720 AM EST Sat Dec 30 2017 Valid 00Z Sun Dec 31 2017 - 00Z Sun Jan 07 2018 Models and ensembles agree on a relatively quiet and dry pattern for Hawai'i over the next week. Precipitable water values will remain below average (generally near an under an inch vs average values just over an inch) and surface high pressure centers will pass eastward along 33N as upper ridging builds to the northwest of the area. Trades will be breezy from time to time especially by the end of next week as the pressure gradient strengthens. Prefer the 00Z ECMWF/Canadian by then as the 00Z/06Z GFS were a bit weaker with the surface high even compared to its own ensemble mean. Fracasso