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M4.6 Depth: 10.0 km

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

UTC time: 2026-08-06 10:49:24 UTC Local time: —

About this earthquake

On August 6, 2026 at 10:49 UTC, a magnitude M4.6 earthquake occurred near Uki, Kumamoto Prefecture (Japan). 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 event was recorded by USGS. Japan: over the past 24 hours, QuakeMap24 logged 2 earthquakes, the strongest at M3.4.

Details

Magnitude
M4.6
Depth
10.0 km
UTC time
2026-08-06 10:49:24 UTC
Local time
—
Country
Japan
State
Kumamoto Prefecture
City
Uki
Source
usgs
Coordinates
32.66110, 130.72310
Temperature
31.3°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 (32.9 km)
Regional average: 32.9 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

3 Felt reports · max reported intensity 3.8

Tectonic context

Located on the Amur Plate.
Near the boundary Amur ↔ Okinawa · about 75 km away

Volcanoes nearby

  • Unzendake
    Distance: 41 km ·Complex ·Elevation: 1'483 m ·Last eruption: 1996 ·Japan
  • Asosan
    Distance: 42 km ·Caldera ·Elevation: 1'592 m ·Last eruption: 2021 ·Japan
  • Kujusan
    Distance: 68 km ·Stratovolcano(es) ·Elevation: 1'791 m ·Last eruption: 1996 ·Japan
  • Kirishimayama
    Distance: 82 km ·Shield ·Elevation: 1'700 m ·Last eruption: 2025 ·Japan
  • Yufu-Tsurumi
    Distance: 93 km ·Lava dome(s) ·Last eruption: 867 ·Japan
  • Yonemaru-Sumiyoshiike
    Distance: 100 km ·Maar(s) ·Elevation: 40 m ·Last eruption: -6200 ·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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