EARTHQUAKE STATISTICS

Japan earthquake statistics for December 2020

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 events149

Highest ShindoShindo 5−

Largest magnitudeM6.3

Events with tsunami status1

Average magnitude3.2

Average depth30.4 km

The JISHINDESU catalogue contains 149 events for this period. The largest was M6.3, 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 22
Dec 35
Dec 42
Dec 56
Dec 64
Dec 74
Dec 83
Dec 92
Dec 101
Dec 116
Dec 126
Dec 132
Dec 145
Dec 152
Dec 165
Dec 178
Dec 1820
Dec 1911
Dec 209
Dec 215
Dec 224
Dec 235
Dec 244
Dec 256
Dec 263
Dec 274
Dec 286
Dec 294
Dec 302
Dec 313

EARTHQUAKE STATISTICS

Events by maximum Shindo

Shindo 194 · 63.1%
Shindo 243 · 28.9%
Shindo 36 · 4%
Shindo 43 · 2%
Shindo 5−3 · 2%

EARTHQUAKE STATISTICS

Largest events by magnitude

Place names follow the available source or romanised name.