4.4

M4.4 Earthquake 51 km NW of Valparaíso, ChileAugust 16, 2026

2026-08-16 16:32:52 UTC (2026-08-16) · approx. 11:32 AM UTC-5 local

MagnitudeM4.4(mwr)
Time16:32 UTC11:32 AM UTC-5
Depth17.2 kmshallow crustal
Coordinates-32.732°, -72.042°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 16, 2026 at 16:32 UTC, a magnitude 4.4 shallow crustal earthquake struck 51 km NW of Valparaíso, Chile, at a depth of 17.2 km and coordinates -32.7316°, -72.0419°.

Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -32.73°, -72.04°

Earthquake Details

Magnitude
4.4 mwr
Depth
17.2 km
shallow crustal
Location
-32.7316°N
-72.0419°E

Technical Information

Event ID
usd0015e8r
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
36
Azimuthal Gap
139.0°
Min Station Distance
0.441°
RMS Residual
0.90 sec
Last Updated
2026-09-18 19:26:48 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Valparaíso, Chile?

The magnitude 4.4 earthquake that struck 51 km NW of Valparaíso, Chile on August 16, 2026 at 16:32 UTC had a depth of 17.2 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 4.4 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.4 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: usd0015e8r). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, August 16, 2026). M4.4 Earthquake 51 km NW of Valparaíso, ChileAugust 16, 2026. Retrieved September 18, 2026 from https://www.earthquaketracker.org/earthquakes/event/usd0015e8r/