📌 Did you know? The 2004 Sumatra–Andaman earthquake (M9.1–9.3) was one of the largest ever recorded and caused a devastating tsunami.
📋 Local earthquakes (past 24h)
About Earthquake Activity in Indonesia
Indonesia lies on the Pacific Ring of Fire and records thousands of earthquakes every year. Learn more about seismic activity in Indonesia below.
The largest earthquake recorded in Indonesia in the past 100 years was M9.1 in 2004 (2004 Sumatra - Andaman Islands Earthquake). The region is defined by Sunda Megathrust, Banda Arc, Palu-Koro Fault, and the risk level is classified as Extreme.
With a population of 275 million, understanding local seismic hazards is crucial. This page provides real‑time USGS data and historical context for Indonesia.
Why does Indonesia experience earthquakes?
Indonesia lies on Indo-Australian Plate subducting beneath Eurasian Plate. The movement of these plates builds up stress, which is released as earthquakes. In subduction zones, one plate dives beneath another, generating some of the largest quakes on Earth. In strike‑slip regions like the San Andreas, plates slide past horizontally.
Key facts about Indonesia seismicity
- 🌋 Seismic risk: Extreme
- 🏔️ Major faults: Sunda Megathrust, Banda Arc, Palu-Koro Fault
- 📅 Notable historical quakes: 2004 Sumatra (M9.1), 2018 Sulawesi (M7.5), 2021 Flores (M7.3)
- 👥 Population exposed: 275 million
- 🧩 Tectonic setting: Indo-Australian Plate subducting beneath Eurasian Plate
Frequently Asked Questions about Indonesia Earthquakes
❓ What was the strongest earthquake in Indonesia?
The largest earthquake recorded in Indonesia in the past 100 years was M9.1 in 2004 (2004 Sumatra - Andaman Islands Earthquake).
❓ Is Indonesia on a fault line?
Yes, Indonesia is crossed by Sunda Megathrust, Banda Arc, Palu-Koro Fault, making it prone to seismic activity.
❓ How often do earthquakes occur in Indonesia?
Due to its tectonic setting (Indo-Australian Plate subducting beneath Eurasian Plate), Indonesia experiences hundreds to thousands of earthquakes each year, though most are too small to feel.
❓ What should I do during an earthquake in Indonesia?
Drop, cover, and hold on. Stay away from windows, and if outdoors, move to an open area. After the shaking stops, check for injuries and be ready for aftershocks.
Other seismically active regions
Data sources: USGS real‑time feed, USGS historical archive (last 100 years), and Wikipedia. Page refreshes live earthquake data every 60 seconds.
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