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Japan

M4.3 Earthquake near 10 km N of Akkeshi, Japan (Japan)

UTC time: 2025-08-04 14:40:48 UTC Local time: —

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About this earthquake

On August 4, 2025 at 14:40 UTC, a magnitude M4.3 earthquake occurred near 10 km N of Akkeshi, Japan (Japan). At around 80 km, the focal depth places this among intermediate-depth events. Tremors of this size are distinctly felt and can occasionally cause light damage.

The event was recorded by USGS.

Details

ID
209e505f425ddfa8992dfd8f5c54b99672c094c8
Magnitude
M4.3
Depth
79.9 km
UTC time
2025-08-04 14:40:48 UTC
Local time
—
Country
Japan
City
hou an ting
Source
usgs
Coordinates
43.12660, 144.84240
Temperature
21.2°C

Depth profile

Depth profile Depth: 79.9 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 79.9 km
Intermediate
79.9 km
79.9 km — deeper than the regional average (33.7 km)
Regional average: 33.7 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

  • Mashu
    Distance: 55 km ·Caldera ·Elevation: 857 m ·Last eruption: 1080 ·Japan
  • Kussharo
    Distance: 64 km ·Caldera ·Elevation: 574 m ·Last eruption: 1320 ·Japan
  • Akan
    Distance: 73 km ·Caldera ·Elevation: 1'499 m ·Last eruption: 2026 ·Japan
  • Tomariyama [Golovnin]
    Distance: 96 km ·Caldera ·Elevation: 535 m ·Last eruption: 1848 ·Japan - administered by Russia
  • Tenchozan
    Distance: 104 km ·Crater rows ·Elevation: 1'046 m ·Japan
  • Rausudake
    Distance: 108 km ·Stratovolcano ·Elevation: 1'660 m ·Last eruption: 1800 ·Japan

Japan

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 968 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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