Magnitude
M3.9
- Depth
- 50.0 km
- Source
- EMSC
Chiba Prefecture · Sosa
Country overviewJapan · Chiba Prefecture
M3.9 Earthquake near Sosa, Chiba Prefecture (Japan)
Map
About this earthquake
On June 26, 2026 at 04:00 UTC, a magnitude M3.9 earthquake occurred near Sosa, Chiba Prefecture (Japan). With a focal depth of about 50 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude are often felt but rarely cause damage.
The data is provided by EMSC and cross-checked across seismological networks.
Details
ID
4470f89cc5c25d8a6af62ba68ca05de178ef6c29
Magnitude
M3.9
Depth
50.0 km
UTC time
2026-06-26 04:00:30 UTC
Local time
—
Country
State
City
Source
emsc
Coordinates
35.70000,
140.60000
Temperature
23.7°C
Depth profile
Shallow
50 km
50 km — deeper than the regional average (33.2 km)
Regional average: 33.2 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
Radius · 50 km
Nearby infrastructure
Airports
- Narita International Airport20.5 kmStraight-line distance
Japan · NRT · RJAA
Source: OurAirports · Dataset date: 2026-10-04
This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates
Chiba Prefecture
Context for this earthquake
04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 34 Catalogue entries
Of 33 other entries for this area and period, 12 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.
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Stats (last 24h)
Global (24h)
450
Country (24h)
Japan
1