Back to map
Japan · Kumamoto Prefecture

M4.9 Earthquake near Ashikita, Kumamoto Prefecture (Japan)

UTC time: 2026-07-28 08:18:54 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded

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

Magnitude
M4.9
Depth
10.0 km
Source
USGS

Kumamoto Prefecture · Ashikita

Country overview

Map

About this earthquake

A magnitude M4.9 earthquake was recorded near Ashikita, Kumamoto Prefecture (Japan) on July 28, 2026 at 08:18 UTC. With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Tremors of this size are distinctly felt and can occasionally cause light damage.

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

Details

ID
24ce2e4f093957d451081ec923b6e05ab2f81cf6
Magnitude
M4.9
Depth
10.0 km
UTC time
2026-07-28 08:18:54 UTC
Local time
—
Country
Japan
State
Kumamoto Prefecture
City
Ashikita
County
Ashikita County
Source
usgs
Coordinates
32.35850, 130.54290
Temperature
30.6°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

Red Severe impact likely.
Estimated population exposed
IV 9'815'713
V 3'388'072
VI 636'714
VII 374'783
VIII 635'782
IX 226'347

≈ 1'873'626 people experienced strong to very strong shaking.

75 Felt reports · max reported intensity 8.8

Ground shaking

IX
Violent · Intensity (MMI) IX
Heavy damage likely.

Tectonic context

Located on the Amur Plate.
Near the boundary Amur ↔ Okinawa · about 68 km away

Volcanoes nearby

  • Unzendake
    Distance: 50 km ·Complex ·Elevation: 1'483 m ·Last eruption: 1996 ·Japan
  • Kirishimayama
    Distance: 56 km ·Shield ·Elevation: 1'700 m ·Last eruption: 2025 ·Japan
  • Yonemaru-Sumiyoshiike
    Distance: 65 km ·Maar(s) ·Elevation: 40 m ·Last eruption: -6200 ·Japan
  • Asosan Activity reported
    Distance: 77 km ·Caldera ·Elevation: 1'592 m ·Last eruption: 2021 ·Japan
  • Aira Activity reported
    Distance: 88 km ·Caldera ·Elevation: 1'117 m ·Last eruption: 2026 ·Japan
  • Kujusan
    Distance: 104 km ·Stratovolcano(es) ·Elevation: 1'791 m ·Last eruption: 1996 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Amakusa AirportJapan · AXJ · RJDA
    38.6 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

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

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