A few thoughts while we wait for 12z models:
1) be wary of Kuchera maps, as they may over estimate ratios with the warm nose causing the snow to be wetter
2) the front end thump of WAA snow often over performs in terms of snowfall rates, but the sleet line moves north faster than modeled. Areas that are expecting mostly sleet may get 1-3" of snow to start. We will need to wait until the hires NAM is in range late Thursday to start to get a feel for this progression
3)a changeover is inevitable for all but perhaps our most northerly posters, but watch the backside for a changeover back to high ratio snow, particularly if the LP is able to track more to the South
4) watch trends in the track of the low pressure and transfer to the coast today and tomorrow, don't get to sucked into details/totals as we still have 4 days + to go