QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

5km WSW of Primo Tapia, B.C., MX

· 15 km deep · released about 180 lb of TNT

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10 km30 km60 km120 km N San Diego County 92 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 2.5 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
San Diego County, 92 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1800 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 83,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 59,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.2× the energy of this one
  4. This earthquake M 2.5 about 180 lb of TNT

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 32.2107, -116.9678. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 92 km (57 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

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

  1. 1.6 5km SE of Chula Vista, CA
  2. 2.4 19km WSW of Primo Tapia, B.C., MX
  3. 1.7 5km NNE of San Ysidro, CA
  4. 2.0 14km NNW of El Sauzal, B.C., MX
  5. 1.7 5km SE of Chula Vista, CA
  6. 3.6 46km SW of Primo Tapia, B.C., MX
  7. 1.9 11km W of El Sauzal, B.C., MX
  8. 2.5 24km WNW of El Sauzal, B.C., MX
  9. 1.7 10km W of El Sauzal, B.C., MX
  10. 1.9 9km WNW of El Sauzal, B.C., MX
  11. 2.3 8km W of El Sauzal, B.C., MX
  12. 1.8 10km W of El Sauzal, B.C., MX
  13. 1.9 8km W of El Sauzal, B.C., MX
  14. 4.3 7km W of El Sauzal, B.C., MX
  15. 2.5 10km W of El Sauzal, 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.