3.8

M3.8 Earthquake 50 km WNW of La Ligua, Chile — June 23, 2020

2020-06-23 20:19:18 UTC (2020-06-23) · approx. 3:19 PM UTC-5 local

MagnitudeM3.8(mb)
Time20:19 UTC≈ 3:19 PM UTC-5
Depth35.4 kmshallow crustal
Coordinates-32.259°, -71.716°
Felt byNo felt reports
Status✓ Reviewed by USGS

On June 23, 2020 at 20:19 UTC, a magnitude 3.8 shallow crustal earthquake struck 50 km WNW of La Ligua, Chile, at a depth of 35.4 km and coordinates -32.2594°, -71.7159°.

Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 7.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 252 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -32.26°, -71.72°

Earthquake Details

Magnitude
3.8 mb
Depth
35.4 km
shallow crustal
Location
-32.2594°N
-71.7159°E

Technical Information

Event ID
us6000aheq
Event Type
earthquake
Status
✓ Reviewed
Significance
222
Azimuthal Gap
168.0°
Min Station Distance
0.464°
RMS Residual
0.54 sec
Last Updated
2020-08-30 00:01:10 UTC

Common Questions

How strong was the magnitude 3.8 earthquake near La Ligua, Chile?

The magnitude 3.8 earthquake that struck 50 km WNW of La Ligua, Chile on June 23, 2020 at 20:19 UTC had a depth of 35.4 km. For context, this was a minor earthquake typically detected only by instruments.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.8 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.8 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000aheq). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, June 23, 2020). M3.8 Earthquake 50 km WNW of La Ligua, Chile — June 23, 2020. Retrieved August 30, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000aheq/