QuakeIndex

Earthquake · reviewed by a seismologist

M 5.4mwb

224 km SW of La Cruz de Loreto, Mexico

· 10 km deep · released about 1.9 kilotons 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 5.4 (mwb)
Depth
10 km below the surface
Felt
no reports yet
Measured shaking
intensity III (ShakeMap)
USGS impact alert
green
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1613 days ago

This was a moderate earthquake. Shaking at this size can damage poorly built structures close to the epicentre.

How big was it?

This earthquake released about 1.9 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4× the energy of this one
  3. Magna, Utah 2020 M 5.7 2.8× the energy of this one
  4. This earthquake M 5.4 about 1.9 kilotons of TNT
  5. Around the size people start to feel M 3.0 this one released 4,000× 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.

For this area

The largest earthquake within 50 km in our catalogue was M 6.6 on 2016-01-21 — about 63 times the energy of this one.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 18.7033, -107.0857. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 5.5 201 km SW of José María Morelos, Mexico
  2. 5.9 240 km SW of La Cruz de Loreto, Mexico
  3. 4.2 243 km WSW of La Cruz de Loreto, Mexico
  4. 5.9 225 km SW of José María Morelos, Mexico
  5. 4.0 221 km SW of La Cruz de Loreto, Mexico
  6. 4.5 off the coast of Jalisco, Mexico
  7. 4.4 184 km WSW of José María Morelos, Mexico
  8. 6.0 213 km SW of La Cruz de Loreto, Mexico
  9. 4.3 211 km SW of José María Morelos, Mexico
  10. 4.0 206 km SW of La Cruz de Loreto, Mexico
  11. 5.8 224 km SW of La Cruz de Loreto, Mexico
  12. 4.7 228 km SW of La Cruz de Loreto, Mexico
  13. 4.0 266 km SW of La Cruz de Loreto, Mexico
  14. 4.9 247 km WSW of La Cruz de Loreto, 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

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