At a beach in Jōetsu City, Niigata Prefecture, three children aged between 6 and 9 were swept away by large waves. Another man and fishing visitors attempted a rescue, but all five lost their lives.
On May 4, one person each died in mountaineering accidents on Mount Yarigatake (approximately 3,003 meters above sea level) and Mount Fuji-Zaka (approximately 2,999 meters above sea level) in the Northern Alps of Toyama Prefecture, as well as on the Southern Alps, which straddle Nagano and Yamanashi prefectures.
On May 5, on Mount Warusawa-dake (approximately 3,110 meters above sea level) in the Northern Alps of Takayama City, Gifu Prefecture, an employee and an advisor from the mountaineering club of the National Defense Academy both died after accidentally slipping during the climb.
On May 6, two people died in a mountaineering accident on Mount Okuhotaka-dake (approximately 3,190 meters above sea level) in the Northern Alps near the Gifu Prefecture border. Three people are also missing near Mount Kita (approximately 2,017 meters above sea level) in Tamba Village, Yamanashi Prefecture.