Back to map
Japan · Chiba Prefecture

M3.0 Earthquake near Sosa, Chiba Prefecture (Japan)

UTC time: 2026-09-29 13:48:30 UTC Local time: —

Map

About this earthquake

On September 29, 2026 at 13:48 UTC, a magnitude M3.0 earthquake occurred near Sosa, Chiba Prefecture (Japan). The hypocenter lay relatively close to the surface at around 50 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The data is provided by EMSC and cross-checked across seismological networks.

Details

ID
dcd07597e658023412f3f6d81ff34ac6cc32d1cb
Magnitude
M3.0
Depth
50.0 km
UTC time
2026-09-29 13:48:30 UTC
Local time
—
Country
Japan
State
Chiba Prefecture
City
Sosa
Source
emsc
Coordinates
35.70000, 140.60000
Temperature
19.7°C

Depth profile

Depth profile Depth: 50 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 50 km
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

  • Hakoneyama
    Distance: 152 km ·Complex ·Elevation: 1'438 m ·Last eruption: 2015 ·Japan
  • Takaharayama
    Distance: 152 km ·Stratovolcano ·Elevation: 1'795 m ·Last eruption: -4570 ·Japan
  • Izu-Oshima
    Distance: 154 km ·Stratovolcano ·Elevation: 758 m ·Last eruption: 1990 ·Japan
  • Nantaisan
    Distance: 155 km ·Stratovolcano ·Elevation: 2'486 m ·Last eruption: -9540 ·Japan
  • Akagisan
    Distance: 158 km ·Stratovolcano ·Elevation: 1'828 m ·Japan
  • Omanago Group
    Distance: 159 km ·Lava dome(s) ·Elevation: 2'341 m ·Last eruption: -3050 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Narita International AirportJapan · NRT · RJAA
    20.5 kmStraight-line distance

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, 31 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

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.

Share