EARTHQUAKE STATISTICS

Japan earthquake statistics for April 2017

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 events177

Highest ShindoShindo 4

Largest magnitudeM5.7

Events with tsunami status0

Average magnitude3.2

Average depth23.8 km

The JISHINDESU catalogue contains 177 events for this period. The largest was M5.7, 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

Apr 17
Apr 24
Apr 32
Apr 44
Apr 53
Apr 68
Apr 72
Apr 87
Apr 98
Apr 109
Apr 118
Apr 127
Apr 1314
Apr 146
Apr 158
Apr 164
Apr 173
Apr 187
Apr 1910
Apr 206
Apr 215
Apr 222
Apr 233
Apr 247
Apr 251
Apr 263
Apr 272
Apr 2810
Apr 298
Apr 309

EARTHQUAKE STATISTICS

Events by maximum Shindo

Shindo 1118 · 66.7%
Shindo 238 · 21.5%
Shindo 318 · 10.2%
Shindo 43 · 1.7%

EARTHQUAKE STATISTICS

Largest events by magnitude

Place names follow the available source or romanised name.