M4.9 Earthquake 53 km SSW of Dampit, Indonesia — October 22, 2021
2021-10-22 02:21:15 UTC (2021-10-22) · approx. 10:21 AM UTC+8 local
Felt by 9 people across nearby locations.
On October 22, 2021 at 02:21 UTC, a magnitude 4.9 intermediate depth earthquake struck 53 km SSW of Dampit, Indonesia, at a depth of 72.9 km and coordinates -8.6515°, 112.5513°. The earthquake was reported felt by 9 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 3.6 (light). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. The nearest populated place is Bandungrejo (population 0).
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Indonesia, a region characterized by the convergence of the Indo-Australian, Eurasian, and Philippine Sea plates, forming the Sunda-Banda arc system. The nearest mapped fault system is the Sunda megathrust. View all earthquakes in Indonesia.
Learn more: Magnitude scale · Aftershock sequences
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 9 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 21,273,192 |
| MMI 4 | light | 29,160,228 |
Earthquake Details
112.5513°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Dampit, Indonesia?
The magnitude 4.9 earthquake that struck 53 km SSW of Dampit, Indonesia on October 22, 2021 at 02:21 UTC had a depth of 72.9 km. It was felt by 9 people with maximum shaking intensity of MMI 3.6 (light). For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -8.6515°, 112.5513°, which is 53 km SSW of Dampit, Indonesia. The nearest populated place is Bandungrejo (population 0). View all earthquakes in Indonesia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
Has Indonesia had earthquakes this big before?
The largest recorded earthquake in Indonesia was the M9.1 Indian Ocean earthquake of December 26, 2004. Today's magnitude 4.9 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000fwmg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 22, 2021). M4.9 Earthquake 53 km SSW of Dampit, Indonesia — October 22, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000fwmg/