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Japan · Okayama Prefecture

M3.3 Earthquake near Maniwa, Okayama Prefecture (Japan)

UTC time: 2026-09-20 23:49:30 UTC Local time: —

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About this earthquake

A magnitude M3.3 earthquake was recorded near Maniwa, Okayama Prefecture (Japan) on September 20, 2026 at 23:49 UTC. With a focal depth of about 10 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 event was recorded by EMSC. Japan: over the past 24 hours, QuakeMap24 logged 3 earthquakes, the strongest at M5.1.

Details

ID
55da499ce5c8fe9069439ef343e1c6550b174813
Magnitude
M3.3
Depth
10.0 km
UTC time
2026-09-20 23:49:30 UTC
Local time
—
Country
Japan
State
Okayama Prefecture
City
Maniwa
Source
emsc
Coordinates
35.30000, 133.70000
Temperature
23.1°C

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 km
10 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

  • Sanbesan
    Distance: 100 km ·Stratovolcano ·Elevation: 1'126 m ·Last eruption: 650 ·Japan
  • Abu
    Distance: 219 km ·Volcanic field ·Elevation: 641 m ·Last eruption: -6850 ·Japan
  • Hakusan
    Distance: 293 km ·Stratovolcano ·Elevation: 2'702 m ·Last eruption: 1659 ·Japan
  • Yufu-Tsurumi
    Distance: 309 km ·Lava dome(s) ·Last eruption: 867 ·Japan
  • Kujusan
    Distance: 334 km ·Stratovolcano(es) ·Elevation: 1'791 m ·Last eruption: 1996 ·Japan
  • Ontakesan
    Distance: 348 km ·Complex ·Elevation: 3'067 m ·Last eruption: 2014 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Yonago Kitaro Airport / JASDF Miho Air BaseJapan · YGJ · RJOH
    47.2 kmStraight-line distance
  • Tottori Sand Dunes Conan AirportJapan · TTJ · RJOR
    49.3 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-21

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Japan

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 3.0 · 950 Catalogue entries

Of 949 other entries for this area and period, 590 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · Japan

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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.

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