The claim
大地震の前にトカラ地方で群発地震が発生する「トカラの法則」?
Original review summary
The review says there is no scientific basis for the “Tokara law” claim that earthquake swarms near the Tokara Islands foretell major earthquakes in Japan. The cited expert noted that only 2 of 18 Tokara M4-or-greater earthquakes since 2000 coincided in time with an M7-or-greater earthquake in Japan, and said the Tokara earthquakes do not trigger earthquakes across Japan.[S1]
Additional context
The review reports that more than 700 earthquakes of intensity 1 or higher occurred near the Tokara Islands between June 21 and July 1, 2025. [S1]
Research date:
Sources and attribution
- [S1] 日本ファクトチェックセンター(JFC) original review
Original review · Retrieved October 16, 2026