日高の稜線は突風注意。沢渡渉は水量確認を

Mount Poroshiri summit is clear and bright this morning at 8:15 AM, with a temperature of 12 degrees Celsius, feeling like 8.2 degrees Celsius. Visibility exceeds 20 kilometers. While the base is warm at 22.5 degrees Celsius, there's a significant 10.5-degree difference to the summit. Mostly clear skies are expected throughout the day, with the temperature peaking at 13.4 degrees Celsius. No precipitation is forecasted, and the risk of thunderstorms is low.

However, gusts of up to 14.5 meters per second are expected on the summit, potentially dropping the perceived temperature below freezing during strong bursts. It is crucial to be well-prepared for wind exposure, especially when moving or resting on the ridges, as the expansive cirque terrain of Mount Poroshiri offers little shelter. Essential layering includes a base layer, a mid-layer such as fleece or light down, and a wind and waterproof outer shell.

Furthermore, a rapid temperature drop of 7 degrees Celsius is anticipated over the forecast period. Temperatures will fall to around 9 degrees Celsius by evening and 5 degrees Celsius overnight. Carry an extra insulating layer and be prepared to turn back early if conditions change unexpectedly.
Ground conditions are generally dry due to no precipitation or snow cover. However, routes like the Ekihiragawa course, which involves over 20 river crossings, may have wet rock surfaces and slippery sections from meltwater and springs. Bring appropriate footwear for river crossings, such as river shoes or sandals, and exercise caution. Be aware this is also active bear territory, so take necessary precautions.