Start with the overnight low and the next snowfall window. The headline number only helps once you know whether west to northwest flow off the Sea of Japan is the pattern to watch. With a 700 to 1030 metre elevation band and 330 metres of vertical, the groomers tell the story quickly once the first few laps are done. A seasonal baseline around 8 metres means small clean refills matter more than waiting for a giant number. The swing variable is ridge wind, which can turn a promising number into a thinner, scoured morning. With patrol boundaries in play, focus on how the inbounds snow will hold through the first half of the day. Chase the first half of the day after a cold refill; skip if the forecast warms before lunch.
See which resorts in Yamagata are getting the best 24 hour totals and the next two days of snow.
