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Indonesia · Nusa Tenggara Timur

M5.5 Earthquake near Nusa Tenggara Timur (Indonesia)

UTC time: 2026-04-21 03:17:07 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. How our reports are produced ↗

Magnitude
M5.5
Depth
77.2 km
Source
EMSC

Nusa Tenggara Timur · Nusa Tenggara Timur

Country overview

Map

M5.5 Earthquake near Nusa Tenggara Timur (Indonesia) · 2026-04-21 — Map showing the location of the epicenter
M5.5 Earthquake near Nusa Tenggara Timur (Indonesia) · 2026-04-21 — Map showing the location of the epicenter

About this earthquake

On April 21, 2026 at 03:17 UTC, a magnitude M5.5 earthquake occurred near Nusa Tenggara Timur (Indonesia). The earthquake originated at an intermediate depth of about 77 km. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by EMSC. Indonesia: 49 earthquakes were recorded in the past 24 hours, the strongest reaching M5.2.

Details

ID
4e8563301ae0311afa6f1a2f71152adc93b4c9ac
Magnitude
M5.5
Depth
77.2 km
UTC time
2026-04-21 03:17:07 UTC
Local time
—
Country
Indonesia
State
Nusa Tenggara Timur
City
Nusa Tenggara Timur
Source
emsc
Coordinates
-9.06800, 124.08630
Temperature
25.6°C

Depth profile

Depth profile Depth: 77.2 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 77.2 km
Intermediate
77.2 km
77.2 km — deeper than the regional average (43.7 km)
Regional average: 43.7 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Felt reports

5felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Apr 23, 2026, 6:35 PM UTC · Last checked: Sep 6, 2026, 12:18 PM UTC

Source: EMSC / LastQuake

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Kefamenanu60.2 kmSE48'202
Kupang133.4 kmSW474'801
Makassar673.5 kmNW1'474'393

GeoNames · CC BY 4.0

Volcanoes nearby

  • Sirung
    Distance: 64 km ·Complex ·Elevation: 1'347 m ·Last eruption: 2021 ·Indonesia
  • Iliwerung
    Distance: 82 km ·Complex ·Elevation: 583 m ·Last eruption: 2021 ·Indonesia
  • Ililabalekan
    Distance: 97 km ·Stratovolcano ·Elevation: 1'018 m ·Indonesia
  • Lewotolok Activity reported
    Distance: 109 km ·Stratovolcano ·Elevation: 1'431 m ·Last eruption: 2026 ·Indonesia
  • Iliboleng
    Distance: 122 km ·Stratovolcano ·Elevation: 1'659 m ·Last eruption: 1993 ·Indonesia
  • Tara, Batu
    Distance: 152 km ·Stratovolcano ·Elevation: 633 m ·Last eruption: 2015 ·Indonesia

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Oecusse Route of the Sandalwood International AirportTimor-Leste · OEC · WPOC
    31.2 kmStraight-line distance
  • AA Bere Tallo (Haliwen) AirportIndonesia · ABU · WATA
    89.7 kmStraight-line distance

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

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

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours10
First 24 hours12
First 72 hours16
Strongest subsequent eventM5.4
M5.42026-04-21 03:17:09 UTC49.3 kmFlores Region, Indonesia M4.42026-04-21 03:19:20 UTC10.3 kmOé-Cussi-Ambeno M3.12026-04-21 03:22:01 UTC27.5 kmPante-Macassar M2.82026-04-21 03:24:47 UTC12.6 kmTIMOR REGION M2.72026-04-21 03:25:49 UTC12.8 kmOé-Cussi-Ambeno M2.52026-04-21 03:48:18 UTC11.8 kmTIMOR REGION M2.62026-04-21 04:18:30 UTC126.5 kmWatohari M3.22026-04-21 04:26:22 UTC126.5 kmHeda M3.22026-04-21 04:56:04 UTC7.0 kmOé-Cussi-Ambeno M2.52026-04-21 08:53:47 UTC19.4 kmKEPULAUAN ALOR, INDONESIA M2.52026-04-21 10:32:20 UTC85.9 kmFLORES REGION, INDONESIA M2.62026-04-21 22:46:50 UTC9.2 kmTIMOR REGION

Nusa Tenggara Timur

Context for this earthquake

09 Sep 2025 – 09 Sep 2026 · M ≥ 3.0 · 383 Catalogue entries

Of 382 other entries for this area and period, 3 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#6
Earlier events M≥486
Earlier events M≥515
Compared since2025-01-04

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M6.22025-10-26 17:04:27 UTC25.0 kmTimor Region M6.22025-10-26 17:04:26 UTC26.6 km59 km NW of Pante Makasar, Timor Leste M6.22025-10-26 17:04:25 UTC26.6 km59 km NW of Pante Makasar, Timor Leste M6.22025-10-26 17:04:25 UTC34.3 kmIndonesia [Sea] M5.62026-04-21 03:17:01 UTC22.0 kmNusa Tenggara Timur

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.

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