QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

68km WSW of Coronado, CA

· 9.9 km deep · released about 21 lb 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 1.9 (ml)
Depth
9.9 km below the surface
Felt
1 report
Nearest
San Diego County, 121 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2229 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 32.3647, -117.8050. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 121 km (75 mi) SW 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

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

  1. 3.3 49 km SW of Rosarito, B.C., MX
  2. 2.3 43 km WSW of Rosarito, B.C., MX
  3. 2.9 42 km WSW of Rosarito, B.C., MX
  4. 2.5 31 km ESE of San Clemente Is. (SE tip), CA
  5. 4.4 40 km S of San Clemente Is. (SE tip), CA
  6. 2.3 65 km WSW of La Esperanza [Granjas Familiares], Mexico
  7. 2.0 47 km SE of San Clemente Is. (SE tip), CA
  8. 1.6 29 km WSW of Coronado, CA
  9. 2.2 54 km SE of San Clemente Is. (SE tip), CA
  10. 1.6 45 km WSW of Coronado, CA
  11. 2.0 55 km W of Rosarito, B.C., MX
  12. 2.2 57km WSW of Rosarito, B.C., MX
  13. 2.4 45km WSW of Coronado, CA
  14. 2.6 43km SE of San Clemente Is. (SE tip), CA
  15. 2.9 38km SSE of San Clemente Is. (SE tip), CA

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.