Forest Fire on Mount Myogi in Gunma Prompts SDF Deployment as Blaze Spreads

Blaze Ignites on Scenic Mount Myogi

A significant forest fire was reported on Monday, December 8, 2025, on Mount Myogi in Tomioka, Gunma Prefecture, Japan. The alarm was raised shortly before 9:00 a.m. local time when a hiker spotted the blaze and contacted emergency services. Mount Myogi, a designated national scenic spot, is a popular destination for climbers and hikers.

Firefighting Efforts Intensify with SDF Assistance

Initial efforts to contain the fire involved disaster prevention helicopters from both Gunma and Saitama prefectures, which conducted aerial water drops throughout Monday. Ground crews also engaged in firefighting operations; however, the flames continued to spread across the challenging mountainous terrain. By Monday evening, the fire had already consumed approximately 8 hectares near the mountain's ridge.

As the fire persisted and expanded, the Gunma Prefectural Government formally requested assistance from the Self-Defense Forces (SDF). In response, Ground Self-Defense Force helicopters commenced firefighting operations on Tuesday morning, December 9, 2025, joining the ongoing efforts to bring the blaze under control.

Current Status and Impact

As of Tuesday morning, the forest fire had grown significantly, affecting an estimated 22.8 hectares on the 1,104-meter-high mountain. Despite the extensive area burned, authorities have confirmed that there have been no reports of injuries or damage to residential properties. The complex topography of Mount Myogi has presented considerable challenges for ground-based firefighting teams, necessitating continued aerial support.