4.5

M4.5 Earthquake 48 km ENE of Los Andes, Chile — May 11, 2021

2021-05-11 14:41:34 UTC (2021-05-11) · approx. 9:41 AM UTC-5 local

Felt by 4 people across nearby locations.

MagnitudeM4.5(mb)
Time14:41 UTC≈ 9:41 AM UTC-5
Depth109.5 kmintermediate depth
Coordinates-32.685°, -70.110°
Felt by4DYFI responses
Status✓ Reviewed by USGS

On May 11, 2021 at 14:41 UTC, a magnitude 4.5 intermediate depth earthquake struck 48 km ENE of Los Andes, Chile, at a depth of 109.5 km and coordinates -32.6855°, -70.1102°.

Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.

The epicenter is located in Chile, a region characterized by the Peru-Chile Trench, where the Nazca Plate subducts beneath South America at 65-80 mm per year. The nearest mapped fault system is the Peru-Chile Trench. View all earthquakes in Chile.

Learn more: Magnitude scale · Aftershock sequences

Map showing earthquake epicenter at -32.69°, -70.11°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 4 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.5 earthquake near 48 km ENE of Los Andes, Chile

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.5 mb
Depth
109.5 km
intermediate depth
Location
-32.6855°N
-70.1102°E
Felt Reports
4
DYFI responses
Community Intensity
2.2
CDI from reports

Technical Information

Event ID
us7000e22t
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Azimuthal Gap
53.0°
Min Station Distance
0.379°
RMS Residual
0.50 sec
Last Updated
2021-07-23 18:08:32 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Los Andes, Chile?

The magnitude 4.5 earthquake that struck 48 km ENE of Los Andes, Chile on May 11, 2021 at 14:41 UTC had a depth of 109.5 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -32.6855°, -70.1102°, which is 48 km ENE of Los Andes, Chile. View all earthquakes in Chile.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.

Has Chile had earthquakes this big before?

The largest recorded earthquake in Chile was the M9.5 Great Chilean earthquake of May 22, 1960. Today's magnitude 4.5 event is significantly smaller than that historical record.

Authoritative source: USGS event page (event ID: us7000e22t). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, May 11, 2021). M4.5 Earthquake 48 km ENE of Los Andes, Chile — May 11, 2021. Retrieved July 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000e22t/