Start with the upper-mountain wind and cloud line. When a cold inland trough is the pattern to watch, the live numbers usually matter most in the first lift window. With a 800 to 1700 metre elevation band and 900 metres of vertical, the trees and upper storm laps hold soft snow well after the open faces are worked. A seasonal baseline around 10 metres means moderate-looking totals can still refresh the main lines quickly. The swing variable is whether the upper lift can run with enough visibility to make the top worth using. If gates are part of the day, treat wind and visibility as decision-making numbers, not small print. 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.
