Magnitude
M3.3
- Depth
- 20.0 km
- Source
- EMSC
Chiba Prefecture · Kamogawa
Country overviewJapan · Chiba Prefecture
M3.3 Earthquake near Kamogawa, Chiba Prefecture (Japan)
Map
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 3 earthquakes, the strongest at M5.1.
Details
ID
bdcb30d0e1879cc6fc24c391c153127acd847c70
Magnitude
M3.3
Depth
20.0 km
UTC time
2026-08-01 09:22:30 UTC
Local time
—
Country
State
City
Source
emsc
Coordinates
35.10000,
140.20000
Temperature
28.5°C
Depth profile
Shallow
20 km
20 km — shallower than the regional average (33.1 km)
Regional average: 33.1 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
Japan
Context for this earthquake
21 Sep 2025 – 21 Sep 2026 · M ≥ 3.0 · 951 Catalogue entries
Of 950 other entries for this area and period, 591 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.
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Country statistics · Japan
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Stats (last 24h)
Global (24h)
634
Country (24h)
Japan
3