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M5.5 Depth: 77.2 km

M5.5 Earthquake near Nusa Tenggara Timur (Indonesia)

UTC time: 2026-04-21 03:17:07 UTC Local time: —

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: 138 earthquakes were recorded in the past 24 hours, the strongest reaching M5.1.

Map

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 (49.7 km)
Regional average: 49.7 km
Why depth matters

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

Depth classes per USGS

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
    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

Subsequent earthquakes nearby

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

First 6 hours9
First 24 hours11
First 72 hours15
Strongest subsequent eventM4.5
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 km M2.72026-04-21 03:25:49 UTC12.8 kmOé-Cussi-Ambeno M2.52026-04-21 03:48:18 UTC11.8 km 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 km M2.52026-04-21 10:32:20 UTC85.9 km M2.62026-04-21 22:46:50 UTC9.2 km M3.82026-04-23 03:48:22 UTC121.6 kmMotonwutun

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#5
Earlier events M≥485
Earlier events M≥514
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 UTC34.3 kmIndonesia [Sea] M5.62026-04-21 03:17:01 UTC22.0 kmNusa Tenggara Timur M5.32025-10-24 04:46:35 UTC44.4 kmFlores Region, Indonesia

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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