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EARTHQUAKE STATISTICS

Japan earthquake statistics for 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 events2,085
Highest ShindoShindo 6+
Largest magnitudeM6.6
Events with tsunami status9
Average magnitude3.3
Average depth29.0 km

The JISHINDESU catalogue contains 2,085 events for this period. The largest was M6.6, with maximum Shindo 6+.

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

  • Jan129
  • Feb97
  • Mar107
  • Apr144
  • May371
  • Jun165
  • Jul120
  • Aug120
  • Sep406
  • Oct136
  • Nov146
  • Dec144
EARTHQUAKE STATISTICS

Events by maximum Shindo

  • Shindo 11344 · 64.6%
  • Shindo 2541 · 26%
  • Shindo 3156 · 7.5%
  • Shindo 433 · 1.6%
  • Shindo 5−5 · 0.2%
  • Shindo 5+2 · 0.1%
  • Shindo 6+1 · 0%
EARTHQUAKE STATISTICS

Largest events by magnitude

Place names follow the available source or romanised name.

  1. Shindo—Adjacent Sea of Torishima IslandM6.610 km
  2. Shindo3Off the southeast Coast of Etorofu IslandM6.4160 km
  3. Shindo3Off the northwest Coast of Miyakojima IslandM6.4170 km
  4. Shindo—Adjacent Sea of Torishima IslandM6.310 km
  5. Shindo1Adjacent Sea of Torishima IslandM6.340 km
  6. Shindo6+Noto, Ishikawa PrefectureM6.310 km
  7. Shindo3Northern Sea of JapanM6.2480 km
  8. Shindo5−Off the Coast of UrakawaM6.2140 km
  9. Shindo5−Off the east Coast of Chiba PrefectureM6.250 km
  10. Shindo2Adjacent Sea of Okinawa Main IslandM6.210 km