Key Facts
• On January 2, strong cold air passed over Japan at about 5,500 m altitude with temperatures below −36°C.
• Heavy snowfall intensified mainly along the Japan Sea side from Hokuriku to San’in regions.
• New snowfall in 12 hours until 16:00: 42 cm in Nō, Itoigawa City (Niigata), 33 cm in Imajo, Minamiechizen Town (Fukui), 27 cm in Kasumi, Kami Town (Hyogo), 28 cm in Takano, Shobara City (Hiroshima).
• Snow depth at 16:00: 74 cm in Daisen Town (Tottori), 18 cm in Niigata City, 15 cm in Matsue City (Shimane).
• Heavy snow warnings issued for parts of Fukui and Yamaguchi Prefectures.
• Snow clouds spread to Kyushu, Setouchi, and central Kinki; snow fell even in urban areas like Fukuoka and Hiroshima.
• From tonight to January 3, active snow clouds will continue over the Japan Sea side.
• Mountain areas may see an additional 50 cm snowfall; heavy snow caution advised from Hokuriku to northern Kinki and San’in.
• Snow clouds expected to move south to Pacific side, possibly causing rare snowfall and accumulation.
• Drivers urged to prepare winter tires and chains due to risk of snow and icy roads.
• Even the Kanto Plain, usually snow-free in winter patterns, may see light snow cover tonight.
Summary
On January 2, 2026, a strong cold air mass passed over Japan, causing heavy snowfall mainly along the Japan Sea side, especially from Hokuriku to San’in. Significant snow accumulation was recorded, with up to 74 cm in some mountain areas. Parts of Fukui and Yamaguchi Prefectures are under heavy snow warnings. Snow clouds have also spread to western Japan’s Pacific side, including urban areas, bringing light snow. The snow is expected to continue into January 3, with mountain regions potentially receiving an additional 50 cm of snow. Snow clouds moving south may cause unusual snowfall on the Pacific side, increasing risks of slippery roads. Drivers are advised to equip winter tires and chains. Even the Kanto Plain, typically less snowy, might experience light snow cover tonight. Residents should remain cautious of heavy snow and icy conditions through this period.
