EARTHQUAKE STATISTICS

Japan earthquake statistics for December 2018

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 events140

Highest ShindoShindo 4

Largest magnitudeM5.9

Events with tsunami status0

Average magnitude3.4

Average depth37.3 km

The JISHINDESU catalogue contains 140 events for this period. The largest was M5.9, with maximum Shindo 4.

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 12
Dec 25
Dec 38
Dec 47
Dec 55
Dec 64
Dec 73
Dec 87
Dec 95
Dec 105
Dec 116
Dec 123
Dec 134
Dec 144
Dec 153
Dec 163
Dec 174
Dec 182
Dec 196
Dec 206
Dec 212
Dec 235
Dec 247
Dec 257
Dec 266
Dec 275
Dec 283
Dec 293
Dec 306
Dec 314

EARTHQUAKE STATISTICS

Events by maximum Shindo

Shindo 194 · 67.1%
Shindo 233 · 23.6%
Shindo 311 · 7.9%
Shindo 42 · 1.4%

EARTHQUAKE STATISTICS

Largest events by magnitude

Place names follow the available source or romanised name.