2025.02.05 Wednesday

Moiwa Mountain base -5℃, light wind, 10cm new snow. Moiwa 800m: -8.4℃, WSW1.5m/s. Mikaeri 750m: -9℃, SSE4.4m/s, rime on trees developing. Annupuri 1100m: -10.5℃, WSW3.1m/s. Hirafu Hanazono: -10.1℃, SSW4.9m/s. Coastal data: Benkei Cape WNW19m/s, Kamui Cape SSW26m/s, 980hPa, wave 3.5m.

Wind speed and wave height at sea are both high, and the sea is very rough. We are in the east bottom part of the low pressure system, the atmospheric gradient is wide, and winds are weak below 750m elevation. Due to the SE warm blizzard yesterday, rime on trees has developed on the slopes over 700m elevation. Cornices have developed on the west side of the slopes. From the test, the upper 30cm slabs are unstable and easy to break with stimulation. Avalanche risk is high on the slopes over 800m elevation, and the risk increases as the W wind and snow intensify later today. All the peak gates, including 6 and 10, will be closed for accident prevention. Many avalanche accidents occurred in the past here in Niseko. If one person ducks the rope, people will follow, and it increases the possibility of accidents. For those who duck ropes, be reminded that it is a violation of the rules. The rules are applied equally regardless of nationality, experience, or knowledge. Please respect the Niseko Rules.

Quote: Niseko Avalanche Information