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M4.0 Depth: 10.0 km

M4.0 Earthquake near Yatsushiro, Kumamoto Prefecture (Japan)

UTC time: 2026-08-12 23:56:30 UTC Local time: —

About this earthquake

A magnitude M4.0 earthquake was recorded near Yatsushiro, Kumamoto Prefecture (Japan) on August 12, 2026 at 23:56 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The data is provided by EMSC and cross-checked across seismological networks. Japan: over the past 24 hours, QuakeMap24 logged 6 earthquakes, the strongest at M5.0.

Details

Magnitude
M4.0
Depth
10.0 km
UTC time
2026-08-12 23:56:30 UTC
Local time
—
Country
Japan
State
Kumamoto Prefecture
City
Yatsushiro
Source
emsc
Coordinates
32.50000, 130.60000
Temperature
27.1°C

Map

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 (32.2 km)
Regional average: 32.2 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

Volcanoes nearby

  • Unzendake
    Distance: 40 km ·Complex ·Elevation: 1'483 m ·Last eruption: 1996 ·Japan
  • Asosan
    Distance: 62 km ·Caldera ·Elevation: 1'592 m ·Last eruption: 2021 ·Japan
  • Kirishimayama
    Distance: 68 km ·Shield ·Elevation: 1'700 m ·Last eruption: 2025 ·Japan
  • Yonemaru-Sumiyoshiike
    Distance: 81 km ·Maar(s) ·Elevation: 40 m ·Last eruption: -6200 ·Japan
  • Kujusan
    Distance: 89 km ·Stratovolcano(es) ·Elevation: 1'791 m ·Last eruption: 1996 ·Japan
  • Aira
    Distance: 103 km ·Caldera ·Elevation: 1'117 m ·Last eruption: 2026 ·Japan

Historic earthquake map · Japan

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Japan

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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