4.1

M4.1 Earthquake 29 km NW of Tumbes, PeruAugust 27, 2026

2026-08-27 17:09:28 UTC (1 hour ago) · approx. 12:09 PM UTC-5 local

MagnitudeM4.1(mb)
Time17:09 UTC12:09 PM UTC-5
Depth38.4 kmshallow crustal
Coordinates-3.393°, -80.652°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 27, 2026 at 17:09 UTC, a magnitude 4.1 shallow crustal earthquake struck 29 km NW of Tumbes, Peru, at a depth of 38.4 km and coordinates -3.3927°, -80.6517°.

Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -3.39°, -80.65°

Earthquake Details

Magnitude
4.1 mb
Depth
38.4 km
shallow crustal
Location
-3.3927°N
-80.6517°E

Technical Information

Event ID
us7000tcbz
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
27
Azimuthal Gap
164.0°
Min Station Distance
0.604°
RMS Residual
0.87 sec
Last Updated
2026-08-27 17:37:25 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Tumbes, Peru?

The magnitude 4.1 earthquake that struck 29 km NW of Tumbes, Peru on August 27, 2026 at 17:09 UTC had a depth of 38.4 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 4.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000tcbz). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, August 27, 2026). M4.1 Earthquake 29 km NW of Tumbes, PeruAugust 27, 2026. Retrieved August 27, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tcbz/