QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

23km NNE of El Sauzal, B.C., MX

· 12 km deep · released about 1,200 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 104 km
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 3.1 (ml)
Depth
12 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
San Diego County, 104 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1562 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1,200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 290,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 13,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,100× the energy of this one
  4. This earthquake M 3.1 about 1,200 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.2× 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 32.0985, -116.6135. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 104 km (65 mi) S of here earthquakes near San Diego County
Imperial County, CA 158 km (98 mi) SW of here earthquakes near Imperial County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 2.0 23km NE of Primo Tapia, B.C., MX
  2. 3.0 34km NE of Ensenada, B.C., MX
  3. 1.6 41km SSE of Tecate, B.C., MX
  4. 1.9 21km S of Primo Tapia, B.C., MX
  5. 2.6 38km SSE of Tecate, B.C., MX
  6. 2.2 32km E of Primo Tapia, B.C., MX
  7. 2.5 22km ENE of Maneadero, B.C., MX
  8. 1.6 25km ENE of Primo Tapia, B.C., MX
  9. 2.1 34km ENE of Ensenada, B.C., MX
  10. 2.1 32km NE of Ensenada, B.C., MX
  11. 2.1 34km ENE of Ensenada, B.C., MX
  12. 1.8 45km ENE of Ensenada, B.C., MX
  13. 2.4 31km E of Primo Tapia, B.C., MX
  14. 2.3 53km ENE of Ensenada, B.C., MX
  15. 2.1 36km NE of Ensenada, B.C., MX

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.