残雪融け進む幌尻岳。日中の好天も夜は急冷

Horoshiri-dake summit is experiencing clear skies this morning. As of 7:00 AM, the temperature is 7.8℃, with a feels-like temperature of 4.8℃. Visibility is excellent, offering expansive views. Temperatures are expected to rise during the day, reaching up to 11℃ at the summit by noon. With 13cm of snow remaining, rapid melt-off is anticipated due to the rising temperatures. Traversing the Nukai-daira River course will likely involve increased water levels at river crossings, requiring careful judgment. Trail conditions will be a mix of remaining snow and muddy, wet sections from meltwater. Carrying chain spikes or light crampons is recommended.

Daytime feels-like temperatures will generally range from 5℃ to 9℃, but the wind can be concentrated in the cirque terrain, lowering the perceived temperature. A base layer of quick-drying material, a fleece mid-layer, and a windproof/waterproof shell as an outer layer are essential, allowing for adjustments during activity. As indicated by the automatic risk assessment, a rapid temperature drop of 11℃ is expected during the forecast period. Temperatures will plummet in the evening, falling below freezing at the summit overnight. Carry an extra insulating layer, such as a down jacket or thick fleece, to prepare for hypothermia.

The Hidaka Mountains are a high-density habitat for brown bears. With rising temperatures, bear activity is expected to increase. Ensure you carry a bear bell, manage food properly, and make noise in areas with limited visibility as part of comprehensive bear safety measures. Plan for a day trip, completing your descent before sunset.