利尻山快晴。突風と低温に注意し行動を

Rishiri-zan is experiencing clear skies today, but summit conditions remain severe. As of 6:45 AM, the summit temperature is 0.7℃, but with winds of 4.5m/s and gusts up to 11.1m/s, the feels like temperature is -4.5℃. While daytime temperatures may rise to 4.9℃, be mindful of the significant wind chill. The base is a warm 10℃, but the large elevation difference necessitates careful layering during ascent.

Ground conditions are primarily exposed rock or dry, with no significant snow cover. However, consider the possibility of frozen wet rock sections due to overnight sub-zero temperatures, requiring cautious footing. On the fragile volcanic scree and unstable terrain from the 9th station to the summit, the risk of losing balance due to gusts is high. Helmets and gloves are essential gear.

The risk of lightning is extremely low with a 0% chance of precipitation, but strong winds and hypothermia are concerns. Gusts could exceed 13m/s during the day. These winds will significantly lower the feels like temperature, increasing the risk of hypothermia. Wear a wicking base layer, a fleece mid-layer, and a windproof and waterproof hardshell outer layer, adding extra insulation during breaks. Carry full rain gear, as dense fog from sea winds can develop suddenly. Winds are forecast to strengthen overnight into early tomorrow, so ensure you complete your descent by daylight.