午前中は強い雪と突風。視界不良の台地は慎重に

Naeba summit currently experiences light cloud with a wind chill of -7.3 degrees Celsius. By 9 AM, strong snow and gusts up to 22.9 meters per second are expected, pushing the wind chill further below -10 degrees Celsius. Visibility is less than 1 kilometer, posing an extremely high risk of getting lost in dense fog on the extensive summit plateau, a specific risk of Naeba. Avoid aggressive movements and refrain from venturing onto the summit plateau in poor visibility.

Ground conditions consist of residual snow mixed with fresh snowfall, potentially forming icy patches due to wind exposure. Be cautious of frozen sections even on lower routes like the Haraigawa and Koakazawa courses. Essential layering includes a wicking base layer, two fleece mid-layers or a light down jacket, and a wind and waterproof outer shell. Thick gloves and a balaclava are crucial for cold protection. Chain spikes are a mandatory piece of equipment.

Snowfall is expected to cease around noon, with clear skies anticipated in the afternoon. However, gusts exceeding 20 meters per second may persist into the afternoon. The risk of hypothermia due to strong winds persists, necessitating constant vigilance and appropriate layering. Once visibility recovers, avoid stepping off the boardwalks in the vast high-altitude wetlands of the summit plateau. Always confirm your position with a GPS device and a map, and exercise sound judgment to turn back promptly if weather conditions deteriorate or if you experience any physical distress.