QuakeIndex

Earthquake · reviewed by a seismologist

M 4.3mb

211 km SW of José María Morelos, Mexico

· 10 km deep · released about 43 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 4.3 (mb)
Depth
10 km below the surface
Felt
1 report · strongest reported intensity IV
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 284 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 43 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 4,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 180× the energy of this one
  3. Magna, Utah 2020 M 5.7 130× the energy of this one
  4. This earthquake M 4.3 about 43 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 89× 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 2,800 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 18.4802, -106.7449. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 5.5 201 km SW of José María Morelos, Mexico
  2. 5.4 180 km SW of José María Morelos, Mexico
  3. 5.9 225 km SW of José María Morelos, Mexico
  4. 5.2 223 km WSW of Emiliano Zapata, Mexico
  5. 4.2 181 km SW of Emiliano Zapata, Mexico
  6. 4.5 off the coast of Jalisco, Mexico
  7. 4.4 184 km WSW of José María Morelos, Mexico
  8. 4.3 169 km SW of Emiliano Zapata, Mexico
  9. 4.8 184 km SW of José María Morelos, 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.