A magnitude 5.6 earthquake struck Yamanashi Prefecture on June 26, recording a maximum seismic intensity of 6-lower in Fujikawaguchiko [1, 2].

The event is significant due to the high intensity of the shaking in the Fuji Five Lakes region, which increases the risk of structural failure and geological instability in a populated area.

The earthquake occurred between 10:28 p.m. and 10:29 p.m. JST [2, 5] with an estimated focal depth of 20 km [5]. Shaking was felt across a wide area, including the Kanto, Tokai, and Chugoku regions [3, 5].

During an emergency press conference held between 12:30 a.m. and 12:40 a.m. JST on June 27 [6, 7], officials from the Japan Meteorological Agency provided updates on the disaster's impact. Ryuki Ebita, head of the Earthquake and Tsunami Monitoring Division, said the immediate dangers facing residents were significant.

"In areas where the shaking was strong, there is a risk of house collapses and landslides," Ebita said [4].

Despite the proximity to Mount Fuji, the agency said that no abnormalities in volcanic activity have been confirmed. Officials said the earthquake occurred at a distance from the volcano and no correlation was observed [4].

The agency has issued a cautionary alert for the next seven days [8]. Residents are urged to remain vigilant regarding aftershocks and the potential for further landslides, particularly in steep terrain.

Emergency services continue to monitor the affected regions for damage to infrastructure and residential buildings. The agency's focus remains on providing real-time data to prevent further casualties as the region stabilizes over the coming week [8].

“"In areas where the shaking was strong, there is a risk of house collapses and landslides,"”

The occurrence of a 6-lower intensity quake in the Fuji Five Lakes region highlights the persistent seismic vulnerability of central Japan. While the lack of volcanic correlation prevents immediate panic regarding Mount Fuji, the one-week warning period suggests a high probability of aftershocks that could trigger secondary disasters, such as landslides, in already weakened soil.