4.0

M4.0 Earthquake 23 km WNW of Valparaíso, Chile — December 25, 2024

2024-12-25 23:14:32 UTC (2024-12-25) · approx. 6:14 PM UTC-5 local

MagnitudeM4.0(mwr)
Time23:14 UTC≈ 6:14 PM UTC-5
Depth24.3 kmshallow crustal
Coordinates-32.986°, -71.878°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 25, 2024 at 23:14 UTC, a magnitude 4.0 shallow crustal earthquake struck 23 km WNW of Valparaíso, Chile, at a depth of 24.3 km and coordinates -32.9860°, -71.8777°.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -32.99°, -71.88°

Earthquake Details

Magnitude
4.0 mwr
Depth
24.3 km
shallow crustal
Location
-32.9860°N
-71.8777°E

Technical Information

Event ID
us6000pfm9
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
34
Azimuthal Gap
146.0°
Min Station Distance
0.197°
RMS Residual
0.75 sec
Last Updated
2025-03-08 22:39:10 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near Valparaíso, Chile?

The magnitude 4.0 earthquake that struck 23 km WNW of Valparaíso, Chile on December 25, 2024 at 23:14 UTC had a depth of 24.3 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 4.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000pfm9). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, December 25, 2024). M4.0 Earthquake 23 km WNW of Valparaíso, Chile — December 25, 2024. Retrieved March 8, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000pfm9/