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Japan · Kumamoto Prefecture

M3.2 Earthquake near Kosa, Kumamoto Prefecture (Japan)

UTC time: 2026-07-28 11:04:30 UTC Local time: —

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About this earthquake

On July 28, 2026 at 11:04 UTC, a magnitude M3.2 earthquake occurred near Kosa, Kumamoto Prefecture (Japan). 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: 3 earthquakes were recorded in the past 24 hours, the strongest reaching M5.1.

Details

ID
0241f118f7bd70c72aa09128d5b493be9bfa5a99
Magnitude
M3.2
Depth
10.0 km
UTC time
2026-07-28 11:04:30 UTC
Local time
—
Country
Japan
State
Kumamoto Prefecture
City
Kosa
County
Kamimashiki County
Source
emsc
Coordinates
32.70000, 130.80000
Temperature
19.3°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

  • Asosan Activity reported
    Distance: 34 km ·Caldera ·Elevation: 1'592 m ·Last eruption: 2021 ·Japan
  • Unzendake
    Distance: 47 km ·Complex ·Elevation: 1'483 m ·Last eruption: 1996 ·Japan
  • Kujusan
    Distance: 60 km ·Stratovolcano(es) ·Elevation: 1'791 m ·Last eruption: 1996 ·Japan
  • Yufu-Tsurumi
    Distance: 85 km ·Lava dome(s) ·Last eruption: 867 ·Japan
  • Kirishimayama
    Distance: 85 km ·Shield ·Elevation: 1'700 m ·Last eruption: 2025 ·Japan
  • Yonemaru-Sumiyoshiike
    Distance: 105 km ·Maar(s) ·Elevation: 40 m ·Last eruption: -6200 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Kumamoto AirportJapan · KMJ · RJFT
    16.1 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

Kumamoto Prefecture

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 3.0 · 190 Catalogue entries

Of 189 other entries for this area and period, 111 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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