4.2

M4.2 Earthquake 134 km N of Calama, ChileDecember 25, 2022

2022-12-25 22:47:00 UTC (2022-12-25) · approx. 5:47 PM UTC-5 local

MagnitudeM4.2(mb)
Time22:47 UTC5:47 PM UTC-5
Depth119.9 kmintermediate depth
Coordinates-21.253°, -68.784°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 25, 2022 at 22:47 UTC, a magnitude 4.2 intermediate depth earthquake struck 134 km N of Calama, Chile, at a depth of 119.9 km and coordinates -21.2530°, -68.7841°.

Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -21.25°, -68.78°

Earthquake Details

Magnitude
4.2 mb
Depth
119.9 km
intermediate depth
Location
-21.2530°N
-68.7841°E

Technical Information

Event ID
us6000jbp5
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
25
Azimuthal Gap
61.0°
Min Station Distance
0.689°
RMS Residual
0.58 sec
Last Updated
2023-03-07 18:59:49 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Calama, Chile?

The magnitude 4.2 earthquake that struck 134 km N of Calama, Chile on December 25, 2022 at 22:47 UTC had a depth of 119.9 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.2 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000jbp5). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, December 25, 2022). M4.2 Earthquake 134 km N of Calama, ChileDecember 25, 2022. Retrieved March 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jbp5/