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DAILY EARTHQUAKE ARCHIVE

Earthquakes in Japan on August 4, 2026

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

earthquakes
26
strongest Shindo
4
largest magnitude
M4.8
Shindo 1+ events
26

Replay one day of earthquakes

2026-08-04 · 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 August 4, 2026

The JISHINDESU catalogue contains 26 earthquakes for this day; 26 reached maximum Shindo 1 or higher. The day's highest Shindo was 4, and its largest reported magnitude was M4.8.

Earthquake with the day's highest ShindoKumamoto Region, Kumamoto Prefecture05:32:00 JST · M4.1 · 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

26 earthquakes · Shindo 4 · M4.8

August 4, 2026

  1. 震度1Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方00:13 JSTRevision 2M2.5Depth: 10 km
  2. 震度1Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方02:18 JSTRevision 2M2.3Depth: 10 km
  3. 震度4Kumamoto Region, Kumamoto Prefecture熊本県熊本地方05:32 JSTRevision 2M4.1Depth: 10 km
  4. 震度3Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方06:04 JSTRevision 2M3.9Depth: 10 km
  5. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方07:02 JSTRevision 2M2.4Depth: 10 km
  6. 震度2Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方07:12 JSTRevision 2M3.7Depth: 10 km
  7. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方08:11 JSTRevision 3M2.4Depth: 10 km
  8. 震度1Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方10:47 JSTRevision 3M3.0Depth: 10 km
  9. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方12:07 JSTRevision 2M2.1Depth: 0 km
  10. 震度1Adjacent Sea of Amami-Oshima Island奄美大島近海12:15 JSTRevision 2M3.7Depth: 20 km
  11. 震度1Eastern Shizuoka Prefecture静岡県東部12:46 JSTRevision 2M2.3Depth: 20 km
  12. 震度1Off the east Coast of Hachijojima Island八丈島東方沖13:46 JSTRevision 2M4.8Depth: 60 km
  13. 震度3Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方14:06 JSTRevision 2M4.4Depth: 0 km
  14. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方14:13 JSTRevision 2M2.9Depth: 10 km
  15. 震度2Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方14:19 JSTRevision 2M3.1Depth: 10 km
  16. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方14:29 JSTRevision 3M2.8Depth: 10 km
  17. 震度1Off the Coast of Iwate Prefecture岩手県沖17:06 JSTRevision 2M3.8Depth: 40 km
  18. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方17:18 JSTRevision 2M2.3Depth: 10 km
  19. 震度1Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方17:57 JSTRevision 2M3.0Depth: 10 km
  20. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方19:23 JSTRevision 2M2.3Depth: 0 km
  21. 震度1Satsuma Region, Kagoshima Prefecture鹿児島県薩摩地方20:03 JSTRevision 2M2.6Depth: 10 km
  22. 震度2Kumamoto Region, Kumamoto Prefecture熊本県熊本地方20:15 JSTRevision 3M2.6Depth: 0 km
  23. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方21:25 JSTRevision 2M2.2Depth: 10 km
  24. 震度2Kumamoto Region, Kumamoto Prefecture熊本県熊本地方22:23 JSTRevision 3M2.9Depth: 10 km
  25. 震度3Off the Coast of Miyagi Prefecture宮城県沖23:00 JSTRevision 2M4.6Depth: 40 km
  26. 震度1Kumamoto Region, Kumamoto Prefecture熊本県熊本地方23:42 JSTRevision 2M2.2Depth: 10 km