QuakeIndex

Earthquake · reviewed by a seismologist

M 4.5mww

53 km E of San Vicente, Mexico

· 10 km deep · released about 85 tons of TNT

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Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 4.5 (mww)
Depth
10 km below the surface
Felt
42 reports · strongest reported intensity III
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2650 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 42 people have reported feeling it to USGS.

How big was it?

This earthquake released about 85 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 2,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 89× the energy of this one
  3. Magna, Utah 2020 M 5.7 63× the energy of this one
  4. This earthquake M 4.5 about 85 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 180× more

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 31.3428, -115.6838. Map © OpenStreetMap contributors.

Aftershocks so far

52 earthquakes have been recorded within 50 km since this one.

  1. 2.3 88km ESE of Maneadero, B.C., MX
  2. 2.5 56 km ENE of San Vicente, Mexico
  3. 2.4 84km SSW of Alberto Oviedo Mota, B.C., MX
  4. 3.4 48 km ENE of San Vicente, Mexico
  5. 2.2 50 km ENE of San Vicente, Mexico
  6. 2.6 58 km E of San Vicente, Mexico
  7. 2.8 55 km ENE of San Vicente, Mexico
  8. 2.3 86km SSW of Alberto Oviedo Mota, B.C., MX
  9. 2.5 56 km ENE of San Vicente, Mexico
  10. 3.0 60 km ENE of San Vicente, Mexico
  11. 3.7 86km ESE of Maneadero, B.C., MX
  12. 2.3 86km SSW of Alberto Oviedo Mota, B.C., MX
  13. 2.2 59 km ENE of San Vicente, Mexico
  14. 2.3 59 km ENE of San Vicente, Mexico
  15. 2.3 55 km E of San Vicente, Mexico

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

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