
Oishida Festival Mogamigawa Fireworks — The finale features "Japan's No. 1 Town Shell, 5 consecutive No. 20 shells"
The Oishida Festival Mogami River Fireworks take place on the Mogami riverbed downstream of Ohashi Bridge in Oishida Town, Yamagata Prefecture, on Sunday, August 16, 2026, from 19:00 to 21:00. Said to have begun in celebration of the bridge's completion, the festival carries about 90 years of history and launches some 3,000 fireworks centered on large shells — including the town-written 'Chomin-go' dedications, a five-shot 20-gou salvo and music-synced creative fireworks — drawing about 120,000 visitors. The venue is a 15-minute walk from JR Oishida Station, with temporary parking (1,200 spaces, 2,000 yen).
Held on Sunday, August 16, 2026, from 19:00 to 21:00 on the Mogami riverbed downstream of Ohashi Bridge, the Oishida Festival fireworks carry roughly 90 years of history since they began in celebration of the bridge's completion. Around 3,000 shells, led by large ones, rise before about 120,000 visitors. Highlights include the 'Chomin-go' shells carrying the townspeople's wishes, the five-shot 20-gou salvo and music-paired creative fireworks, while the festival itself adds a mikoshi procession. The venue is a 15-minute walk from JR Oishida Station, or about 10 minutes by car from the Tohoku-Chuo Expressway Oishida-Murayama IC, with temporary lots (1,200 spaces, 2,000 yen per car) at the town hall and elsewhere. Buy paid seats in advance, and bring a layer — temperatures drop along the river at night.