QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

46km SW of Primo Tapia, B.C., MX

· 5.7 km deep · released about 2.1 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 3.4 (ml)
Depth
5.7 km below the surface
Felt
3 reports · strongest reported intensity II
Measured shaking
intensity II (ShakeMap)
Nearest
San Diego County, 128 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2269 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 80,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,500× the energy of this one
  4. This earthquake M 3.4 about 2.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.4× 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 31.9613, -117.3055. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 128 km (80 mi) SSW of here earthquakes near San Diego County

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

Aftershocks so far

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

  1. 2.5 8km SSW of Primo Tapia, B.C., MX
  2. 2.1 22km WNW of El Sauzal, B.C., MX
  3. 2.4 19km WSW of Primo Tapia, B.C., MX
  4. 2.5 41km WSW of El Sauzal, B.C., MX
  5. 3.6 46km SW of Primo Tapia, B.C., MX
  6. 1.9 11km W of El Sauzal, B.C., MX
  7. 2.5 24km WNW of El Sauzal, B.C., MX
  8. 1.7 10km W of El Sauzal, B.C., MX
  9. 1.8 10km W of El Sauzal, B.C., MX
  10. 2.5 10km W of El Sauzal, B.C., MX
  11. 1.7 22km W of El Sauzal, B.C., MX
  12. 2.0 19km WNW of El Sauzal, B.C., MX
  13. 1.7 19km W of El Sauzal, B.C., MX
  14. 2.5 24km WSW of Rosarito, B.C., MX
  15. 1.9 23km SW of Rosarito, 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.