残雪と薄曇り。一ノ越は落石と足元に注意

The morning offers nearly clear conditions, with temperatures expected to rise to the 8-degree Celsius range during the day. At the summit, the current perceived temperature is still low at 1.5°C, making warm clothing essential for activity. A base layer of quick-drying material, a mid-layer such as fleece, and a waterproof-breathable shell as an outer layer are recommended, with a focus on adjusting for body temperature regulation. The snow depth is 52cm, and the residual snowpack will rapidly soften due to rising daytime temperatures. Especially on the route from Murodo via Ichinokoshi to the summit of Oyama, the softening snow will make footing unstable. The risk of rockfall increases on the steep slopes around Ichinokoshi due to snowmelt, so maintain constant vigilance of your surroundings. Muddy conditions from snowmelt are also expected, so microspikes are mandatory, and light crampons should be considered depending on conditions. Visibility is currently 1km, but it will change to partly cloudy during the day, with potential for localized poor visibility.

Partly cloudy conditions will persist in the afternoon, and temperatures will gradually drop. With the cooling towards evening, the snow surface that softened during the day may harden again. Light drizzle is forecast for early tomorrow morning, so consider the risk of hypothermia from getting wet. During your activity, always pay attention to changes in visibility and underfoot conditions, aiming for an early start and choosing safe routes.