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M3.7 Depth: 10.0 km

M3.7 Earthquake near Matsumae, Hokkaido Prefecture (Japan)

UTC time: 2026-08-28 23:14:30 UTC Local time: —

About this earthquake

A magnitude M3.7 earthquake was recorded near Matsumae, Hokkaido Prefecture (Japan) on August 28, 2026 at 23:14 UTC. With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Shaking of this size is frequently noticed but usually harmless.

The data is provided by EMSC and cross-checked across seismological networks. Japan: 2 earthquakes were recorded in the past 24 hours, the strongest reaching M4.0.

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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

Volcanoes nearby

  • Oshima-Oshima
    Distance: 26 km ·Stratovolcano ·Elevation: 732 m ·Last eruption: 1790 ·Japan
  • Iwakisan
    Distance: 98 km ·Stratovolcano ·Elevation: 1'624 m ·Last eruption: 1863 ·Japan
  • Hokkaido-Komagatake
    Distance: 129 km ·Stratovolcano ·Elevation: 1'131 m ·Last eruption: 2000 ·Japan
  • Osorezan
    Distance: 135 km ·Stratovolcano ·Elevation: 878 m ·Last eruption: 1787 ·Japan
  • Hakkodasan
    Distance: 136 km ·Stratovolcano(es) ·Elevation: 1'584 m ·Last eruption: 1550 ·Japan
  • Towada
    Distance: 145 km ·Caldera ·Elevation: 1'011 m ·Last eruption: 915 ·Japan

Historic earthquake map · Japan

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Country statistics · Japan

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