Peru earthquakes

M4.5 earthquake 6 km WNW of Sama Grande, Peru

A magnitude 4.5 earthquake struck 6 km WNW of Sama Grande, Peru on Sun, Apr 18, 2021, 7:27 PM GMT-5 (00:27 UTC), 28 km (17 mi) below the surface.

A larger quake followed: M5.4 2 km NW of Chuquitira, Peru. This one was a foreshock.

Tacna forecastMore in Peru

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.5 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2021-04-19 00:27:32 UTC
Depth
27.8 km (17.3 mi), shallow
Epicenter
17.762° S, 70.549° W
Region
Peru
Felt reports
7
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

7 people reported to the USGS what they felt; the strongest reported shaking was V, moderate shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Oblique reverse
Moment magnitude
4.5 Mwr
Nodal plane 1
Strike 55°, dip 29°, rake 123°
Nodal plane 2
Strike 198°, dip 66°, rake 73°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.6 km horizontally, 3.4 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
77°
Stations used
112

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 4.27 km NE of Locumba, Peru · 1993 days ago · 106 km deep · 28 km away
  2. 4.315 km ENE of Ticaco, Peru · 1987 days ago · 10 km deep · 79 km away · felt by 1
  3. 4.716 km ENE of Tarata, Peru · 1984 days ago · 10 km deep · 80 km away · felt by 2
  4. 4.111 km ENE of Chuquitira, Peru · 1982 days ago · 10 km deep · 85 km away
  5. 4.332 km ESE of Chuquitira, Peru · 1982 days ago · 10 km deep · 96 km away
  6. 4.111 km ENE of Tarata, Peru · 1982 days ago · 10 km deep · 75 km away
  7. 4.15 km NE of Torata, Peru · 1977 days ago · 86 km deep · 84 km away
  8. 4.226 km ESE of Chuquitira, Peru · 1972 days ago · 10 km deep · 92 km away
  9. 4.414 km E of Chuquitira, Peru · 1972 days ago · 10 km deep · 86 km away
  10. 4.020 km E of Estique, Peru · 1972 days ago · 10 km deep · 81 km away
  11. 4.419 km ENE of Estique, Peru · 1971 days ago · 10 km deep · 80 km away
  12. 5.42 km NW of Chuquitira, Peru · 1970 days ago · 10 km deep · 75 km away · felt by 4
  13. 4.021 km E of Estique, Peru · 1970 days ago · 10 km deep · 83 km away
  14. 4.219 km E of Tarata, Peru · 1968 days ago · 10 km deep · 81 km away
  15. 4.215 km E of Estique, Peru · 1966 days ago · 10 km deep · 77 km away
  16. 4.18 km SE of Chuquitira, Peru · 1965 days ago · 10 km deep · 74 km away
  17. 4.610 km NNW of Chuquitira, Peru · 1964 days ago · 22 km deep · 79 km away · felt by 2
  18. 4.423 km ENE of Tarata, Peru · 1964 days ago · 10 km deep · 86 km away
  19. 4.915 km ENE of Ticaco, Peru · 1960 days ago · 5 km deep · 79 km away
  20. 4.221 km E of Estique, Peru · 1960 days ago · 10 km deep · 81 km away
  21. 4.716 km ENE of Tarata, Peru · 1953 days ago · 10 km deep · 79 km away
  22. 4.456 km SE of Calana, Peru · 1952 days ago · 130 km deep · 100 km away · felt by 1
  23. 4.512 km ENE of Tarata, Peru · 1951 days ago · 17 km deep · 76 km away

Before

  1. 4.33 km SSW of Chuquitira, Peru · 2016 days ago · 140 km deep · 71 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000e2rk. Read Sat, Oct 3, 2026, 4:52 PM UTC.