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DAILY EARTHQUAKE ARCHIVE

Earthquakes in Japan on April 12, 2021

Replay earthquakes recorded on this day at their actual occurrence times and inspect every available report.

earthquakes
37
strongest Shindo
4
largest magnitude
M5.2
Shindo 1+ events
37

Replay one day of earthquakes

2021-04-12 · JST00:00:00Pause
Shindo12345−5+6−6+7
00:0006:0012:0018:0024:00
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JISHINDESU catalogue organised from JMA and P2PQuake data. Times use JST. Points are reported epicentres and observations, not simulated wave propagation.

Reading the daily record

How to read the record for April 12, 2021

The JISHINDESU catalogue contains 37 earthquakes for this day; 37 reached maximum Shindo 1 or higher. The day's highest Shindo was 4, and its largest reported magnitude was M5.2.

Earthquake with the day's highest ShindoAdjacent Sea of Tokara Islands23:01:00 JST · M5.2 · Shindo 4
01

Catalogue time, not a wave simulation

The replay reveals reports at their recorded JST origin times. Station dots show observed Shindo, but the moment they appear is not a measured seismic-wave arrival time.

02

Shindo and magnitude measure different things

Magnitude describes the earthquake at its source; Shindo describes shaking at each station. One earthquake can therefore produce different Shindo readings by location.

Shindo and magnitude explained →
03

A record can be updated later

Follow-up bulletins and corrections for the same earthquake are consolidated into one record. Each report page shows the current values and any available revision history.

Data and methodology →
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Daily record

Earthquake reports

37 earthquakes · Shindo 4 · M5.2

April 12, 2021

  1. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海01:05 JSTconfirmedM2.5Depth: 20 km
  2. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海01:14 JSTconfirmedM2.6Depth: 20 km
  3. 震度2Reinan, Fukui Prefecture福井県嶺南01:14 JSTconfirmedM3.6Depth: 10 km
  4. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海01:32 JSTconfirmedM2.8Depth: 10 km
  5. 震度1Off the Coast of Fukushima Prefecture福島県沖02:00 JSTconfirmedM4.0Depth: 50 km
  6. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海02:04 JSTconfirmedM2.2Depth: 10 km
  7. 震度2Adjacent Sea of Tokara Islandsトカラ列島近海02:35 JSTconfirmedM2.8Depth: 20 km
  8. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海02:52 JSTconfirmedM2.5Depth: 20 km
  9. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海03:08 JSTconfirmedM2.6Depth: 20 km
  10. 震度2Adjacent Sea of Tokara Islandsトカラ列島近海03:36 JSTconfirmedM3.2Depth: 20 km
  11. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海03:37 JSTconfirmedM2.9Depth: 20 km
  12. 震度2Adjacent Sea of Tokara Islandsトカラ列島近海03:56 JSTconfirmedM3.2Depth: 20 km
  13. 震度2Southern Ibaraki Prefecture茨城県南部03:59 JSTconfirmedM3.5Depth: 70 km
  14. 震度3Adjacent Sea of Tokara Islandsトカラ列島近海04:18 JSTconfirmedM3.9Depth: 20 km
  15. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海04:21 JSTconfirmedM2.8Depth: 20 km
  16. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海04:23 JSTconfirmedM2.6Depth: 20 km
  17. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海04:38 JSTconfirmedM3.1Depth: 20 km
  18. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海04:54 JSTconfirmedM2.6Depth: 20 km
  19. 震度2Adjacent Sea of Tokara Islandsトカラ列島近海05:08 JSTconfirmedM3.7Depth: 20 km
  20. 震度1Eastern Region · Fuji Five Lakes, Yamanashi Prefecture山梨県東部・富士五湖05:18 JSTconfirmedM2.6Depth: 20 km
  21. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海05:33 JSTconfirmedM2.3Depth: 20 km
  22. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海06:22 JSTconfirmedM2.6Depth: 20 km
  23. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海06:47 JSTconfirmedM2.7Depth: 20 km
  24. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海11:14 JSTconfirmedM2.5Depth: 20 km
  25. 震度2Adjacent Sea of Tokara Islandsトカラ列島近海11:52 JSTconfirmedM2.9Depth: 20 km
  26. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海12:59 JSTconfirmedM2.7Depth: 20 km
  27. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海13:50 JSTconfirmedM2.8Depth: 20 km
  28. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海13:55 JSTconfirmedM2.8Depth: 20 km
  29. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海15:02 JSTconfirmedM2.9Depth: 20 km
  30. 震度2Adjacent Sea of Tokara Islandsトカラ列島近海15:55 JSTconfirmedM3.2Depth: 20 km
  31. 震度2Adjacent Sea of Tokara Islandsトカラ列島近海16:31 JSTconfirmedM3.0Depth: 20 km
  32. 震度2Adjacent Sea of Tokara Islandsトカラ列島近海16:53 JSTconfirmedM3.7Depth: 20 km
  33. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海17:16 JSTconfirmedM2.6Depth: 20 km
  34. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海20:27 JSTconfirmedM2.6Depth: 10 km
  35. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海22:04 JSTconfirmedM3.0Depth: 10 km
  36. 震度4Adjacent Sea of Tokara Islandsトカラ列島近海23:01 JSTconfirmedM5.2Depth: 20 km
  37. 震度1Adjacent Sea of Tokara Islandsトカラ列島近海23:12 JSTconfirmedM2.6Depth: 10 km