EARTHQUAKE STATISTICS

Japan earthquake statistics for December 2021

Catalogue events, magnitude, maximum Shindo, depth and tsunami statuses for the same reporting period.

Full periodData updated: Nov 7, 2026, 11:00 JST

This is a completed period, although later additions and corrections can still revise totals.

Catalogue events434

Highest ShindoShindo 5+

Largest magnitudeM6.0

Events with tsunami status0

Average magnitude3.1

Average depth22.7 km

The JISHINDESU catalogue contains 434 events for this period. The largest was M6.0, with maximum Shindo 5+.

How these statistics are calculated

We count unique earthquake records in the JISHINDESU catalogue. Corrections update the same record and cancellations follow the current catalogue state. Dates use JST; averages include records where that value exists. The tsunami count covers statuses other than ‘none’.

EARTHQUAKE STATISTICS

Events through the period

Dec 19
Dec 24
Dec 37
Dec 454
Dec 585
Dec 661
Dec 735
Dec 89
Dec 939
Dec 1011
Dec 1110
Dec 128
Dec 137
Dec 147
Dec 154
Dec 166
Dec 179
Dec 183
Dec 197
Dec 201
Dec 213
Dec 227
Dec 233
Dec 241
Dec 256
Dec 269
Dec 276
Dec 285
Dec 298
Dec 306
Dec 314

EARTHQUAKE STATISTICS

Events by maximum Shindo

Shindo 1288 · 66.4%
Shindo 2108 · 24.9%
Shindo 329 · 6.7%
Shindo 46 · 1.4%
Shindo 5−2 · 0.5%
Shindo 5+1 · 0.2%

EARTHQUAKE STATISTICS

Largest events by magnitude

Place names follow the available source or romanised name.