QuakeIndex

Earthquake · reviewed by a seismologist

M 5.7mww

201 km SSW of Barra de Navidad, Mexico

· 10 km deep · released about 5.4 kilotons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N
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 5.7 (mww)
Depth
10 km below the surface
Felt
4 reports · strongest reported intensity III
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. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 5.4 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.7 would have released about 32 times as much.

  1. Loma Prieta, California 1989 M 6.9 63× the energy of this one
  2. Northridge, California 1994 M 6.7 32× the energy of this one
  3. Mineral, Virginia 2011 M 5.8 1.4× the energy of this one
  4. This earthquake M 5.7 about 5.4 kilotons of TNT
  5. Around the size people start to feel M 3.0 this one released 11,000× 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 4.4 on 2017-05-18.

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 17.4893, -105.3228. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 5.0 184 km SW of Cuyutlán, Mexico
  2. 4.7 182 km SSW of Barra de Navidad, Mexico
  3. 4.2 186 km SSW of Barra de Navidad, Mexico
  4. 4.1 180 km SSW of Cuyutlán, Mexico
  5. 4.3 201 km SSW of Barra de Navidad, Mexico
  6. 4.3 196 km SSW of Barra de Navidad, Mexico
  7. 4.7 236 km SW of Cuyutlán, 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.