M4.5 earthquake 45 km NNW of Ayna, Peru
A magnitude 4.5 earthquake struck 45 km NNW of Ayna, Peru on Wed, Mar 9, 1977, 7:41 AM GMT-5 (12:41 UTC), 34 km (21 mi) below the surface.
A larger quake followed: M4.9 28 km WNW of Ayna, Peru. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1977-03-09 12:41:22 UTC
- Depth
- 34.0 km (21.1 mi), shallow
- Epicenter
- 12.274° S, 74.082° 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.
- Stations used
- 7
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 6 in the 30 days before it.
After
Before
- 4.752 km NE of Paucarbamba, Peru · 18094 days ago · 31 km deep · 12 km away
- 5.666 km N of Ayna, Peru · 18094 days ago · 14 km deep · 25 km away
- 5.136 km NNW of Ayna, Peru · 18095 days ago · 43 km deep · 11 km away
- 5.668 km ENE of Salcabamba, Peru · 18095 days ago · 41 km deep · 37 km away
- 5.2central Peru · 18099 days ago · 22 km deep · 3 km away
- 4.648 km NNW of Kimbiri, Peru · 18118 days ago · 33 km deep · 20 km away
Earthquakes todayPeru earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000mv8. Read Tue, Sep 22, 2026, 7:42 AM UTC.