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Indonesia · West Sumatra

M4.0 Earthquake near Kepulauan Mentawai, West Sumatra (Indonesia)

UTC time: 2026-08-22 17:40:07 UTC Local time: —
Magnitude
M4.0
Depth
28.0 km
Source
EMSC

West Sumatra · Kepulauan Mentawai

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About this earthquake

On August 22, 2026 at 17:40 UTC, a magnitude M4.0 earthquake occurred near Kepulauan Mentawai, West Sumatra (Indonesia). With a focal depth of about 28 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 EMSC. Indonesia: 17 earthquakes were recorded in the past 24 hours, the strongest reaching M5.1.

Details

ID
07aaf129feb8d81b26837da352d96c8338f5622b
Magnitude
M4.0
Depth
28.0 km
UTC time
2026-08-22 17:40:07 UTC
Local time
—
Country
Indonesia
State
West Sumatra
City
Kepulauan Mentawai
Source
emsc
Coordinates
-3.20000, 100.38000
Temperature
25.8°C

Depth profile

Depth profile Depth: 28 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 28 km
Shallow
28 km
28 km — shallower than the regional average (43.2 km)
Regional average: 43.2 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

  • Sumbing
    Distance: 173 km ·Stratovolcano ·Elevation: 2'507 m ·Last eruption: 1921 ·Indonesia
  • Kerinci
    Distance: 194 km ·Stratovolcano ·Elevation: 3'800 m ·Last eruption: 2024 ·Indonesia
  • Talang
    Distance: 249 km ·Stratovolcano ·Elevation: 2'575 m ·Last eruption: 2007 ·Indonesia
  • Kaba
    Distance: 252 km ·Stratovolcano ·Elevation: 1'962 m ·Last eruption: 2000 ·Indonesia
  • Tandikat-Singgalang
    Distance: 308 km ·Stratovolcano(es) ·Elevation: 2'879 m ·Last eruption: 1924 ·Indonesia
  • Marapi
    Distance: 314 km ·Complex ·Elevation: 2'885 m ·Last eruption: 2026 ·Indonesia

West Sumatra

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 45 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 · Indonesia

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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 · Indonesia

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

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