Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 804 AM EDT Mon Mar 27 2017 Valid 00Z Tue Mar 28 2017 - 00Z Tue Apr 04 2017 The upper level pattern over Hawai'i for the upcoming week features large-scale ridging in the Horse Latitudes, with (outside of the 00z Canadian which is not preferred) good agreement amongst the operational models and their ensembles that significant systems should remain well north of the state. Expect a typical trade wind pattern through the week, which might pick up steam toward the weekend. Precipitable water values look a touch low through the period, near 1". Precipitation should remain light and confined to mainly windward/mountainous areas. By mid-week, models continue to advertise a surface low intensifying across the northern Pacific and tracking towards the Alaskan Peninsula. The implications for Hawaii will be the trailing cold front towards the end of the week into the Papahanaumokuakea National Marine Monument, which will bring another break in the subtropical ridge and some increased shower activity there but otherwise not seem to impact the Trades. Models are not indicating anything in terms of significant precipitation with this system. Roth/Santorelli