M4.7 earthquake 29 km SSE of Puente Viru, Peru
A magnitude 4.7 earthquake struck 29 km SSE of Puente Viru, Peru on Wed, Aug 21, 1985, 7:24 AM GMT-5 (12:24 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 25 km W of Bolognesi, Peru. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-08-21 12:24:52 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 8.680° S, 78.701° W
- Region
- Peru
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt in the Chimbote area.
From the USGS event page for usp0002hzb. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.125 km W of Bolognesi, Peru · 15015 days ago · 33 km deep · 55 km away
- 4.312 km NNE of Puerto Santa, Peru · 15011 days ago · 33 km deep · 25 km away
Before
Earthquakes todayPeru earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002hzb. Read Thu, Oct 1, 2026, 7:03 AM UTC.