午後から霧雨。湿潤な火山路とガスに注意

Mount Meakan is experiencing relatively calm conditions this morning, with the summit at 15.1°C under cloudy skies. There is approximately a 5°C difference in temperature between the summit and the base. Temperatures are expected to rise to the upper 17s during the day, but light drizzle will begin around noon, intensifying to drizzle by 3 PM. This will make the scree slopes on the Onneto Course wet and slippery, requiring extreme caution with foot placement.

The perceived temperature will remain in the upper 17s through the afternoon, but high humidity and exposure to drizzle will significantly lower the actual feel. A quick-drying base layer, a thin fleece or synthetic jacket as a mid-layer, and a windproof, waterproof rainwear as an outer layer are essential. A light synthetic insulated jacket will provide warmth during breaks or if winds pick up. The ground will become wet in the afternoon, with some areas turning muddy.

Strong winds are forecasted with gusts up to 8.3 m/s, which should not impede movement significantly. However, these gusts could increase the risk of slipping on scree. The risk of lightning is currently low, but be mindful of localized weather changes. Hypothermia risk can be mitigated by wearing appropriate rainwear and insulation. From noon onwards, as the wind shifts to SW, there is a higher chance of sulfur gas accumulation around the fumarole group. Avoid going downwind and promptly leave the area if you feel any physical discomfort. Precipitation will cease in the evening, and winds will calm, but temperatures will drop to the low 13s, so ensure adequate cold weather gear if planning night activities.