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Japan · Kumamoto Prefecture

M4.6 Earthquake near Amakusa, Kumamoto Prefecture (Japan)

UTC time: 2026-09-19 12:07:12 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded Content updated:

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

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About this earthquake

A magnitude M4.6 earthquake was recorded near Amakusa, Kumamoto Prefecture (Japan) on September 19, 2026 at 12:07 UTC. With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The event was recorded by USGS.

Details

ID
7854fbec6f96d18a0b0c043dfd79c9bd5c271081
Magnitude
M4.6
Depth
10.0 km
UTC time
2026-09-19 12:07:12 UTC
Local time
—
Country
Japan
State
Kumamoto Prefecture
City
Amakusa
Source
usgs
Coordinates
32.37990, 129.85680
Temperature
26.2°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

Estimated impact

2 Felt reports · max reported intensity 3.1

Tectonic context

Located on the Amur Plate.
Near the boundary Amur ↔ Okinawa · about 38 km away

Volcanoes nearby

  • Unzendake
    Distance: 59 km ·Complex ·Elevation: 1'483 m ·Last eruption: 1996 ·Japan
  • Yonemaru-Sumiyoshiike
    Distance: 97 km ·Maar(s) ·Elevation: 40 m ·Last eruption: -6200 ·Japan
  • Fukue
    Distance: 99 km ·Volcanic field ·Elevation: 315 m ·Last eruption: -400 ·Japan
  • Kirishimayama
    Distance: 107 km ·Shield ·Elevation: 1'700 m ·Last eruption: 2025 ·Japan
  • Aira Activity reported
    Distance: 117 km ·Caldera ·Elevation: 1'117 m ·Last eruption: 2026 ·Japan
  • Asosan Activity reported
    Distance: 128 km ·Caldera ·Elevation: 1'592 m ·Last eruption: 2021 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Amakusa AirportJapan · AXJ · RJDA
    30.6 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-20

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

Kumamoto Prefecture

Context for this earthquake

20 Sep 2025 – 20 Sep 2026 · M ≥ 3.0 · 189 Catalogue entries

Of 188 other entries for this area and period, 9 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

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Historic earthquake map · Japan

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Country statistics · Japan

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

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