QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

123km SSW of Estacion Coahuila, B.C., MX

· 4.6 km deep · released about 1.2 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 3.3 (ml)
Depth
4.6 km below the surface
Felt
no reports yet
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1788 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 1.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 140,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,600× the energy of this one
  4. This earthquake M 3.3 about 1.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.5× 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 31.1123, -115.2762. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 2.9 74 km ENE of San Vicente, Mexico
  2. 2.5 53 km E of San Vicente, Mexico
  3. 2.0 103km ESE of Maneadero, B.C., MX
  4. 3.0 66 km NW of San Felipe, Mexico
  5. 2.8 62 km ENE of San Vicente, Mexico
  6. 3.3 120km ESE of Maneadero, B.C., MX
  7. 2.2 121km SSW of Alberto Oviedo Mota, B.C., MX
  8. 2.8 110km ESE of Maneadero, B.C., MX
  9. 3.1 64 km NW of San Felipe, Mexico
  10. 3.0 103km ESE of Maneadero, B.C., MX
  11. 3.1 65 km NW of San Felipe, Mexico
  12. 2.7 55 km E of San Vicente, Mexico
  13. 2.0 123km SSW of Estacion Coahuila, B.C., MX
  14. 2.3 64 km ENE 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2019-04-20 — it released about 72 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.