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Japan · Kumamoto Prefecture

M4.6 Earthquake near Yatsushiro, Kumamoto Prefecture (Japan)

UTC time: 2026-08-02 10:00:09 UTC Local time: —
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Archive record · original publication time was not recorded

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

Magnitude
M4.6
Depth
10.0 km
Source
USGS

Kumamoto Prefecture · Yatsushiro

Country overview

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About this earthquake

A magnitude M4.6 earthquake was recorded near Yatsushiro, Kumamoto Prefecture (Japan) on August 2, 2026 at 10:00 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Tremors of this size are distinctly felt and can occasionally cause light damage.

The data is provided by USGS and cross-checked across seismological networks.

Details

ID
166da1304456ce33bd11271050e6ec4195985748
Magnitude
M4.6
Depth
10.0 km
UTC time
2026-08-02 10:00:09 UTC
Local time
—
Country
Japan
State
Kumamoto Prefecture
City
Yatsushiro
Source
usgs
Coordinates
32.39660, 130.69190
Temperature
30.5°C

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 km
10 km — shallower than the regional average (33.1 km)
Regional average: 33.1 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Estimated impact

2 Felt reports · max reported intensity 2.7

Tectonic context

Located on the Amur Plate.
Near the boundary Amur ↔ Okinawa · about 45 km away

Volcanoes nearby

  • Kirishimayama
    Distance: 54 km ·Shield ·Elevation: 1'700 m ·Last eruption: 2025 ·Japan
  • Unzendake
    Distance: 55 km ·Complex ·Elevation: 1'483 m ·Last eruption: 1996 ·Japan
  • Asosan Activity reported
    Distance: 66 km ·Caldera ·Elevation: 1'592 m ·Last eruption: 2021 ·Japan
  • Yonemaru-Sumiyoshiike
    Distance: 70 km ·Maar(s) ·Elevation: 40 m ·Last eruption: -6200 ·Japan
  • Aira Activity reported
    Distance: 91 km ·Caldera ·Elevation: 1'117 m ·Last eruption: 2026 ·Japan
  • Kujusan
    Distance: 93 km ·Stratovolcano(es) ·Elevation: 1'791 m ·Last eruption: 1996 ·Japan

Yatsushiro

Context for this earthquake

20 Sep 2025 – 20 Sep 2026 · M ≥ 3.0 · 100 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

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Historic earthquake map · Japan

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