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M3.3 Depth: 20.0 km

M3.3 Earthquake near Kamogawa, Chiba Prefecture (Japan)

UTC time: 2026-08-01 09:22:30 UTC Local time: —

About this earthquake

On August 1, 2026 at 09:22 UTC, a magnitude M3.3 earthquake occurred near Kamogawa, Chiba Prefecture (Japan). With a focal depth of about 20 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: over the past 24 hours, QuakeMap24 logged 11 earthquakes, the strongest at M5.1.

Details

Magnitude
M3.3
Depth
20.0 km
UTC time
2026-08-01 09:22:30 UTC
Local time
—
Country
Japan
State
Chiba Prefecture
City
Kamogawa
Source
emsc
Coordinates
35.10000, 140.20000
Temperature
28.5°C

Map

Depth profile

Depth profile Depth: 20 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 20 km
Shallow
20 km
20 km — shallower than the regional average (32.8 km)
Regional average: 32.8 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

  • Izu-Oshima
    Distance: 85 km ·Stratovolcano ·Elevation: 758 m ·Last eruption: 1990 ·Japan
  • Izu-Tobu
    Distance: 103 km ·Pyroclastic cone(s) ·Elevation: 1'406 m ·Last eruption: 1989 ·Japan
  • Toshima
    Distance: 106 km ·Stratovolcano ·Elevation: 508 m ·Last eruption: -4550 ·Japan
  • Hakoneyama
    Distance: 108 km ·Complex ·Elevation: 1'438 m ·Last eruption: 2015 ·Japan
  • Niijima
    Distance: 115 km ·Lava dome(s) ·Elevation: 432 m ·Last eruption: 886 ·Japan
  • Miyakejima
    Distance: 128 km ·Stratovolcano ·Elevation: 775 m ·Last eruption: 2010 ·Japan

Historic earthquake map · Japan

Open history map
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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