午前は安定も午後から雨具必携 濡れた岩場に注意

As of 7:45 AM, Mt. Tsurugi summit is mostly clear with a temperature of 8.8°C, feeling like 7.4°C. Winds are calm, and visibility is excellent. There is a 5.6°C temperature difference from the base, highlighting the importance of acknowledging altitudinal temperature changes. Temperatures will rise to 11.6°C by noon, but strong drizzle is expected to begin at 3 PM, intensifying into the night with temperatures dropping to 2.6°C by 3 AM on May 29th.

Current snow depth is 100cm. Given Mt. Tsurugi's characteristic terrain of continuous snowfields and rock walls, residual snow conditions prevail. While some snow surfaces may be firm in the morning, rising daytime temperatures will soften the snow. The afternoon drizzle will make the rock faces wet and slippery. This significantly increases the risk of rockfall and falls, especially on exposed rock ridges and narrow sections such as Kani-no-Tatebai, Kani-no-Yokobai, and the chains on Bessan-one. Activities should be concentrated in the dry morning hours, and a decision to turn back should be made early before the afternoon weather deteriorates.

As indicated by the automated risk assessment, a sharp temperature drop of 8°C is expected during the forecast period. Carry an extra insulating layer from the start. A wicking base layer, a fleece mid-layer, and a waterproof-breathable shell are essential. Additionally, pack an insulated jacket, such as down or synthetic, for breaks and colder nighttime conditions. The afternoon rain will significantly increase the risk of hypothermia if clothing gets wet. Crampons and a helmet are mandatory; microspikes may be insufficient in some areas.

While the risk of lightning is low today, gusts up to 9.1m/s are forecasted for the night. Exposed ridges will be particularly affected by wind, further lowering the perceived temperature. Any activity near the summit after 3 PM is highly dangerous, and nighttime ascent or descent is strongly discouraged.