4.2

M4.2 Earthquake 6 km NW of Sama Grande, PeruApril 13, 2026

2026-04-13 20:42:49 UTC (2026-04-13)

On April 13, 2026 at 20:42 UTC, a magnitude 4.2 intermediate depth earthquake struck 6 km NW of Sama Grande, Peru, at a depth of 93.5 km and coordinates -17.7438°, -70.5433°.

Map showing earthquake epicenter at -17.74°, -70.54°

Earthquake Details

Magnitude
4.2 mb
Depth
93.5 km
intermediate depth
Location
-17.7438°N
-70.5433°E

Technical Information

Event ID
us6000spsa
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
28
Azimuthal Gap
141.0°
Min Station Distance
0.652°
RMS Residual
0.95 sec
Last Updated
2026-04-16 17:28:59 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Sama Grande, Peru?

The magnitude 4.2 earthquake that struck 6 km NW of Sama Grande, Peru on April 13, 2026 at 20:42 UTC had a depth of 93.5 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.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.