At Ogna, leaf-peeping is beating powder chasing for now. High peaks may catch a cosmetic dusting, while lower slopes stay very much autumn. A dusting up high would be scenic, not a reason to book lift tickets. Patience, grasshopper.
That makes Ogna the 8th snowiest of 16 Gunma resorts we have reviewed.
Start with the upper-mountain wind and cloud line. When a cold front pushing across the divide is the pattern to watch, the live numbers usually matter most in the first lift window. With a 1110 to 1800 metre elevation band and 690 metres of vertical, the bigger vertical gives you room to move higher when the lower runs soften. A seasonal baseline around 8 metres means small clean refills matter more than waiting for a giant number. The swing variable is whether the upper lift can run with enough visibility to make the top worth using. With patrol boundaries in play, focus on how the inbounds snow will hold through the first half of the day. Chase it after a cold storm only if the wind eases; if the top is socked in, wait for the next clear window.
See which resorts in Gunma are getting the best 24 hour totals and the next two days of snow.