羊蹄山頂は濃霧。火口縁の滑落に厳重警戒

As of 7 AM, Yotei Summit reports a temperature of 10.2 degrees Celsius with visibility below 1 kilometer due to dense fog. Humidity is high at 95%, and winds are nearly calm at 0.25 m/s. Temperatures are expected to rise to around 15 degrees Celsius during the day, but cloudy conditions and poor visibility are forecast to persist throughout. Although no precipitation is predicted, the high humidity and fog will keep conditions damp, increasing the risk of getting wet.

Ground conditions are generally wet, with muddy sections likely on some routes. Above the tree line at 1400 meters, exposed rock sections will be wet from the dense fog. While perceived temperatures will range from 10 to 15 degrees Celsius, getting wet can rapidly lower your body temperature. Ensure you have a quick-drying synthetic base layer, a thin fleece or synthetic long-sleeve shirt as a mid-layer, and a waterproof-breathable rain jacket and pants as an outer layer. Light gloves are also recommended.

Today, walking around the crater rim or attempting the Okachi-meguri at the summit crater is extremely dangerous due to poor visibility, significantly increasing the risk of falling. All major routes, including Birafu, Makari, Kyogoku, and Kimobetsu, will present navigation challenges above the tree line due to the limited visibility. While the risk of strong winds or thunderstorms is low, poor visibility is the primary hazard. Avoid pushing for the summit if conditions are challenging and be prepared to turn back. Carry multiple navigation tools such as a map, compass, and GPS, and exercise extreme caution.