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EARTHQUAKE STATISTICS

Japan earthquake statistics for August 2023

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

Full periodData updated:

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

Catalogue events120
Highest ShindoShindo 4
Largest magnitudeM5.9
Events with tsunami status0
Average magnitude3.4
Average depth30.9 km

The JISHINDESU catalogue contains 120 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

  • Aug 16
  • Aug 27
  • Aug 31
  • Aug 43
  • Aug 54
  • Aug 61
  • Aug 77
  • Aug 82
  • Aug 94
  • Aug 103
  • Aug 116
  • Aug 125
  • Aug 131
  • Aug 153
  • Aug 166
  • Aug 172
  • Aug 181
  • Aug 196
  • Aug 203
  • Aug 215
  • Aug 225
  • Aug 232
  • Aug 247
  • Aug 255
  • Aug 264
  • Aug 274
  • Aug 283
  • Aug 295
  • Aug 305
  • Aug 314
EARTHQUAKE STATISTICS

Events by maximum Shindo

  • Shindo 180 · 66.7%
  • Shindo 229 · 24.2%
  • Shindo 310 · 8.3%
  • Shindo 41 · 0.8%
EARTHQUAKE STATISTICS

Largest events by magnitude

Place names follow the available source or romanised name.

  1. Shindo4Off the east Coast of Aomori PrefectureM5.920 km
  2. Shindo3Off the Coast of SanrikuM5.810 km
  3. Shindo3Off the east Coast of Osumi PeninsulaM5.440 km
  4. Shindo3Southern Tokachi Region, HokkaidoM5.150 km
  5. Shindo2Off the Coast of Fukushima PrefectureM4.810 km
  6. Shindo3Adjacent Sea of Miyakojima IslandM4.750 km
  7. Shindo3Off the Coast of Miyagi PrefectureM4.760 km
  8. Shindo3Off the east Coast of Osumi PeninsulaM4.740 km
  9. Shindo1Off the Coast of SanrikuM4.710 km
  10. Shindo2Off the Coast of Fukushima PrefectureM4.650 km