M4.0 earthquake 31 km WSW of Pacocha, Peru
A magnitude 4.0 earthquake struck 31 km WSW of Pacocha, Peru on Fri, Mar 20, 2015, 3:49 AM GMT-5 (08:49 UTC), 28 km (17 mi) below the surface.
A larger quake followed: M4.4 91 km WSW of Pacocha, Peru. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb), light
- Local time
- UTC
- 2015-03-20 08:49:23 UTC
- Depth
- 28.0 km (17.4 mi), shallow
- Epicenter
- 17.780° S, 71.610° W
- Region
- Peru
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.

How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 8.6 km horizontally, 5.3 km in depth
- Magnitude uncertainty
- ±0.21
- Stations used
- 0
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 4 in the 30 days before it.
After
Before
Earthquakes todayPeru earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10001p41. Read Wed, Sep 30, 2026, 5:30 PM UTC.