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Japan · Chiba Prefecture

M4.9 Earthquake near Yokoshibahikari, Chiba Prefecture (Japan)

UTC time: 2026-10-07 19:13:48 UTC Local time: —
Magnitude
M4.9
Depth
50.6 km
Source
USGS

Chiba Prefecture · Yokoshibahikari

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About this earthquake

On October 7, 2026 at 19:13 UTC, a magnitude M4.9 earthquake occurred near Yokoshibahikari, Chiba Prefecture (Japan). The hypocenter lay relatively close to the surface at around 51 km, increasing how strongly it was felt. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The event was recorded by USGS. Japan: 4 earthquakes were recorded in the past 24 hours, the strongest reaching M4.4.

Details

ID
503ced2b1fc60c033c2936a3be42bff6752164b5
Magnitude
M4.9
Depth
50.6 km
UTC time
2026-10-07 19:13:48 UTC
Local time
—
Country
Japan
State
Chiba Prefecture
City
Yokoshibahikari
County
Sanmu
Source
usgs
Coordinates
35.55970, 140.58350
Temperature
18.0°C

Depth profile

Depth profile Depth: 50.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 50.6 km
Shallow
50.6 km
50.6 km — deeper than the regional average (33.6 km)
Regional average: 33.6 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

Estimated impact

4 Felt reports · max reported intensity 2.7

Tectonic context

Located on the Okhotsk Plate.
Near the boundary Okhotsk ↔ Philippine Sea · about 104 km away

Volcanoes nearby

  • Izu-Oshima
    Distance: 143 km ·Stratovolcano ·Elevation: 758 m ·Last eruption: 1990 ·Japan
  • Hakoneyama
    Distance: 146 km ·Complex ·Elevation: 1'438 m ·Last eruption: 2015 ·Japan
  • Izu-Tobu
    Distance: 154 km ·Pyroclastic cone(s) ·Elevation: 580 m ·Last eruption: 1989 ·Japan
  • Takaharayama
    Distance: 166 km ·Stratovolcano ·Elevation: 1'795 m ·Last eruption: -4570 ·Japan
  • Toshima
    Distance: 166 km ·Stratovolcano ·Elevation: 508 m ·Last eruption: -4550 ·Japan
  • Nantaisan
    Distance: 166 km ·Stratovolcano ·Elevation: 2'486 m ·Last eruption: -9540 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

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

Source: OurAirports · Dataset date: 2026-10-05

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

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 profile

Historic earthquake map · Japan

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Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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