A magnitude 5.6 earthquake struck eastern Yamanashi Prefecture near the Fuji Five Lakes area at approximately 10:29 p.m. JST on Friday [1], [4].
The event is significant due to its proximity to Mount Fuji and its high intensity, which can cause substantial shaking and structural damage in populated areas.
The earthquake reached a maximum intensity of Shindo 6-weak [3]. According to reports, the quake occurred at a depth of about 20 km [1]. The shaking was particularly strong in Fuji-Kawaguchiko Town [5], [6].
Despite the strength of the quake, the Japan Meteorological Agency said there is no risk of a tsunami [3].
Public concern immediately turned toward the status of Mount Fuji. However, the Chief Cabinet Secretary said no abnormalities have been confirmed at the volcano [1]. Earthquake experts said the event occurred in a known "earthquake nest" and is unrelated to volcanic activity of Mount Fuji [1], [5].
Local authorities continue to monitor the region for aftershocks. The timing of the event was reported by some sources as 10:29 p.m. [1], while others noted it occurred around 10:30 p.m. [1].
“The earthquake reached a maximum intensity of Shindo 6-weak.”
The occurrence of a Shindo 6-weak earthquake in the Fuji Five Lakes region highlights the ongoing seismic risk in Yamanashi Prefecture. Because the event was linked to a known 'earthquake nest' rather than volcanic pressure, it suggests the tremor was a tectonic adjustment rather than a precursor to an eruption of Mount Fuji, which remains a critical point of monitoring for Japanese disaster management officials.
