Check the freezing level against the full vertical first. Here, a cold storm crossing the Hakuba ridgeline is the pattern to watch, so the useful question is how cold and calm the next window stays. With a 750 to 1676 metre elevation band and 926 metres of vertical, the trees and upper storm laps hold soft snow well after the open faces are worked. A seasonal baseline around 12 metres means moderate-looking totals can still refresh the main lines quickly. The swing variable is wind: light flow lets the trees refill, while a hard blast strips the exposed entrances. With patrol boundaries in play, focus on how the inbounds snow will hold through the first half of the day. Chase it when 10 to 20 cm lands overnight with light to moderate wind; if gusts climb, make it a sheltered-tree day.
See which resorts in Nagano are getting the best 24 hour totals and the next two days of snow.
