Label | EQ date | EQ name | Lat.,°N | Long., °E | M | Δt_{200} | |||

a | 1993-07-12 | Southwest-Off Hokkaido EQ | 42.78 | 139.18 | 7.8 | 0.293 (1993-05-23) | 0.278 (1993-06-07) | 0.95 | 2 |

b | 1994-10-04 | East-Off Hokkaido EQ | 43.38 | 147.67 | 8.2 | 0.295 (1994-06-30) | 0.319 (1994-07-22) | 1.08 | 3 |

c | 1994-12-28 | Far-Off Sanriku EQ | 40.43 | 143.75 | 7.6 | 0.196 (1994-10-15) | 0.197 (1994-10-19) | 1.01 | 2–3 |

d | 2003-09-26 | Off Tokachi EQ | 41.78 | 144.08 | 8.0 | 0.289 (2003-07-03) | 0.306 (2003-07-14) | 1.06 | 3 |

e | 2010-12-22 | Near Chichi-jima EQ | 27.05 | 143.94 | 7.8 | 0.232 (2010-11-30) | 0.248 (2010-11-30) | 1.07 | 1 |

f | 2011-03-11 | Tohoku EQ | 38.10 | 142.86 | 9.0 | 0.157 (2011-01-05) | 0.160 (2011-01-05) | 1.02 | 2 |

The symbols are the minima of the variability that preceded these EQs along with their dates. Δt

_{200}is the difference in months between the dates of and EQ. Lat., latitude; Long., longitude.