On April 26th, 2025, a 61-year-old female hiker in a party of 3 tripped or lost balance and fell at Mt. Okawairi while descending, resulting in minor injuries.

On April 26th, 2025, a 64-year-old female backcountry skier in a party of 2 had a ski accident at Gokuraku-daira, resulting in minor injuries.

On April 25th, 2025, a 58-year-old male solo mountaineer suffered a fall from height at Cho-yari, resulting in minor injuries.

On April 25th, 2025, a 64-year-old female solo mountaineer suffered a fall from height at Mt. Jonen while climbing, resulting in minor injuries.

On April 21st, 2025, a 45-year-old male backcountry skier in a party of 2 had a ski accident and fell into terrain at Mt. Jiigatake, resulting in minor injuries.

On April 19th, 2025, a 54-year-old female rock climber in a party of 3 was struck by rockfall at Mt. Yokodake, resulting in minor injuries.

On April 19th, 2025, a 54-year-old female rock climber in a party of 3 was struck by rockfall at Mt. Yokodake, resulting in minor injuries.

On April 17th, 2025, a 74-year-old male solo mountaineer suffered a fall from height at Mt. Amida while descending, resulting in minor injuries.

On April 17th, 2025, a 74-year-old male solo mountaineer suffered a fall from height at Mt. Amida while descending, resulting in minor injuries.

On April 5th, 2025, multiple backcountry skiers aged 50 and 15 in a party of 2 lost their route and became unable to continue at Mt. Norikura, requiring rescue.

On March 31st, 2025, a 38-year-old male solo mountaineer tripped or lost balance and fell at Mt. Utsugi, resulting in a missing-person response.

On March 30th, 2025, a 64-year-old male mountaineer in a party of 9 suffered a fall from height at Mt. Jiigatake while descending, resulting in minor injuries. The report identifies this as a fall from ridge or exposed route.

On March 30th, 2025, a 51-year-old male mountaineer in a party of 2 suffered a fall from height at Mt. Minami, resulting in a missing-person response.

On March 30th, 2025, a 51-year-old male mountaineer in a party of two went missing after breaking through a snow cornice while climbing toward Mt. Minamidake and falling from height. He was found deceased on April 5th.

On March 29th, 2025, a 38-year-old male solo mountaineer entered Mt. Utsugi and later went missing after an apparent fall from height for a cause not fully specified in the report. He was found deceased on April 4th.

On March 26th, 2025, a 49-year-old male solo mountaineer was found deceased for reasons not specified in the report at Mt. Norikura,

On March 22nd, 2025, a 31-year-old male backcountry skier in a party of 7 had a ski accident and collided with a tree at Mt. Norikura, resulting in minor injuries.

On March 21st, 2025, a 58-year-old male solo mountaineer suffered a fall from height at Mt. Nishihotaka while descending, resulting in fatal injuries.

On March 21st, 2025, a 38-year-old male solo hiker did not return from mountain activity at Mt. Hinokio, resulting in a missing-person response.

On March 20th, 2025, a 36-year-old male sidecountry skier in a party of 4 had a ski accident at Mt. Kenashi, resulting in minor injuries.

On March 19th, 2025, a 68-year-old male hiker in a party of 2 experienced an incident at Mt. Chausu while ascending, resulting in minor injuries.

On March 16th, 2025, a 58-year-old male subject in a party of 2 lost the route and became unable to continue at Mt. Akadake, requiring rescue.

On March 10th, 2025, a 42-year-old male backcountry skier in a party of two fell into a waterfall basin at Happo Ridge and became unable to continue, resulting in minor injuries and rescue.

On March 9th, 2025, a 54-year-old male solo mountaineer suffered a fall from height at Mt. Kisokomagatake while climbing, resulting in fatal injuries.

On March 9th, 2025, a 54-year-old male solo mountaineer did not return from mountain activity at Mt. Kisokomagatake, resulting in a missing-person response.

On March 8th, 2025, a 54-year-old female hiker in a party of 3 suffered a fall from height at Senjojiki Cirque while ascending, resulting in minor injuries.

On March 8th, 2025, a 24-year-old male solo backcountry skier experienced an incident at Mt. O-Tomi, requiring rescue.

On March 7th, 2025, a 66-year-old male solo hiker suffered a fall from height at Mt. Tengu, resulting in fatal injuries.

On March 7th, 2025, a 66-year-old male solo mountaineer suffered a fall from height at Mt. Akadake while descending, resulting in fatal injuries.

On March 7th, 2025, a 69-year-old male solo backcountry skier lost the route and became unable to continue at Mt. Neko, requiring rescue.

On March 1st, 2025, a 59-year-old male solo hiker suffered a medical event at Eastern Nagano while ascending, resulting in a medical emergency.

On February 25th, 2025, a 37-year-old female backcountry skier in a party of 3 had a ski accident at Hiyodori-mine, resulting in minor injuries.

On February 24th, 2025, a 34-year-old male solo mountaineer did not return from mountain activity at Mt. Karamatsu, resulting in a missing-person response.

On February 24th, 2025, a 27-year-old male mountaineer in a party of 2 experienced an equipment or preparation issue and was unable to continue at Mt. Hoken, requiring rescue. Technical skill limitation was noted. The patient status included leg injury.

On February 23rd, 2025, a 48-year-old male solo mountaineer suffered a fall from height at Mt. Amida while climbing, resulting in minor injuries.

On February 22nd, 2025, a 36-year-old male hiker in a party of 2 suffered a fall from height at Mt. Okawairi while descending, requiring rescue.

On February 22nd, 2025, a 60-year-old male solo hiker tripped or lost balance and fell at Mt. Yamabuki while descending, resulting in minor injuries.

On February 20th, 2025, a 40-year-old male sidecountry skier in a party of 2 had a ski accident at Mt. Yakebitai, resulting in fatal injuries.

On February 14th, 2025, a 31-year-old male sidecountry skier in a party of 2 left the ski resort area and was unable to return due to navigation or terrain at Nozawa Onsen Forest Area, requiring rescue.

On February 11th, 2025, a 51-year-old male solo mountaineer lost the route and became unable to continue at Mt. Yokodake while descending, requiring rescue.

On February 10th, 2025, a 65-year-old male subject in a party of 2 tripped or lost balance and fell at Mt. Akadake, resulting in minor injuries. The fall occurred inside a mountain hut.

On February 10th, 2025, a 41-year-old male solo backcountry skier lost the route and became unable to continue at Mt. Sado, requiring rescue.

On February 10th, 2025, a 51-year-old male solo backcountry skier was caught in an avalanche at Mt. Neko, resulting in burial and rescue.

On February 10th, 2025, multiple sidecountry skiers aged 50 and 37 in a party of 2 left the ski resort area and was unable to return due to navigation or terrain at Mt. Kenashi, requiring rescue.

On February 9th, 2025, a 43-year-old male solo backcountry skier suffered a medical event at Jizo-no-Kashira, resulting in a medical emergency.

On February 9th, 2025, a 72-year-old male solo hiker did not return from mountain activity at Nagano City , resulting in a missing-person response.

On February 7th, 2025, multiple sidecountry skiers aged 19 left the ski resort area and was unable to return due to navigation or terrain at Mt. Iwatake, requiring rescue.

On February 5th, 2025, a 53-year-old male solo sidecountry skier left the ski resort area and was unable to return due to navigation or terrain at Shiga Kogen , requiring rescue.

On February 1st, 2025, a 76-year-old male solo sidecountry skier left the ski resort area and was unable to return due to navigation or terrain at Shiga Kogen , resulting in fatal injuries.

On January 29th, 2025, a 30-year-old female sidecountry skier in a party of 3 left the ski resort area and was unable to return due to navigation or terrain at Mt. Kenashi, requiring rescue.