Back to map
Indonesia · East Nusa Tenggara

M2.9 Earthquake near Umbu Riri, East Nusa Tenggara (Indonesia)

UTC time: 2026-08-17 03:09:07 UTC Local time: —
Magnitude
M2.9
Depth
61.0 km
Source
EMSC

East Nusa Tenggara · Umbu Riri

Country overview

Map

About this earthquake

On August 17, 2026 at 03:09 UTC, a magnitude M2.9 earthquake occurred near Umbu Riri, East Nusa Tenggara (Indonesia). With a focal depth of about 61 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by EMSC and cross-checked across seismological networks. Indonesia: 22 earthquakes were recorded in the past 24 hours, the strongest reaching M4.9.

Details

ID
cffc1e5c098c4df96305082933d677037ac43d18
Magnitude
M2.9
Depth
61.0 km
UTC time
2026-08-17 03:09:07 UTC
Local time
—
Country
Indonesia
State
East Nusa Tenggara
City
Umbu Riri
County
Sumba Tengah
Village
Umbu Riri
Source
emsc
Coordinates
-9.62000, 119.52000
Temperature
27.2°C

Depth profile

Depth profile Depth: 61 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 61 km
Shallow
61 km
61 km — deeper 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

  • Sano, Wai
    Distance: 112 km ·Caldera ·Elevation: 1'319 m ·Indonesia
  • Ranakah Activity reported
    Distance: 156 km ·Lava dome(s) ·Elevation: 2'288 m ·Last eruption: 1991 ·Indonesia
  • Sangeang Api
    Distance: 165 km ·Complex ·Elevation: 1'912 m ·Last eruption: 2022 ·Indonesia
  • Inierie
    Distance: 177 km ·Stratovolcano ·Elevation: 2'245 m ·Last eruption: -8050 ·Indonesia
  • Inielika
    Distance: 188 km ·Complex ·Elevation: 1'559 m ·Last eruption: 2001 ·Indonesia
  • Ebulobo
    Distance: 204 km ·Stratovolcano ·Elevation: 2'096 m ·Last eruption: 1969 ·Indonesia

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Tambolaka AirportIndonesia · TMC · WATK
    38.4 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-05

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

East Nusa Tenggara

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 3,417 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

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 · Indonesia

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

Share