Magnitude
M3.3
- Depth
- 20.0 km
- Source
- EMSC
Chiba Prefecture · Katsuura
Country overviewJapan · Chiba Prefecture
M3.3 Earthquake near Katsuura, Chiba Prefecture (Japan)
Map
About this earthquake
On September 12, 2026 at 06:56 UTC, a magnitude M3.3 earthquake occurred near Katsuura, Chiba Prefecture (Japan). The hypocenter lay relatively close to the surface at around 20 km, increasing how strongly it was felt. Earthquakes of this magnitude are often felt but rarely cause damage.
The event was recorded by EMSC. Japan: over the past 24 hours, QuakeMap24 logged 2 earthquakes, the strongest at M3.4.
Details
ID
a796aa7610f7fcb6f946ee0fae117f9ec2d26da3
Magnitude
M3.3
Depth
20.0 km
UTC time
2026-09-12 06:56:30 UTC
Local time
—
Country
State
City
Source
emsc
Coordinates
35.20000,
140.30000
Temperature
25.0°C
Depth profile
Shallow
20 km
20 km — shallower than the regional average (33.9 km)
Regional average: 33.9 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
Chiba Prefecture
Context for this earthquake
05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 34 Catalogue entries
Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.
Open seismic profileHistoric earthquake map · Japan
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Country statistics · Japan
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Stats (last 24h)
Global (24h)
741
Country (24h)
Japan
2