QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

11km S of Progreso, B.C., MX

· 11 km deep · released about 43 lb of TNT

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10 km30 km60 km120 km N Imperial County 66 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 2.1 (ml)
Depth
11 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Imperial County, 66 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3138 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 32.4825, -115.5955. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Imperial County, CA 66 km (41 mi) SSW of here earthquakes near Imperial County
San Diego County, CA 126 km (78 mi) ESE 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

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

  1. 2.2 2km E of El Centro, CA
  2. 1.9 3km ESE of El Centro, CA
  3. 1.8 2km SE of El Centro, CA
  4. 1.9 2km ESE of El Centro, CA
  5. 1.6 2km SSW of Heber, CA
  6. 1.7 9km W of Progreso, B.C., MX
  7. 2.0 12km NW of Progreso, B.C., MX
  8. 2.1 11km S of Progreso, B.C., MX
  9. 2.7 7km NNW of Delta, B.C., MX
  10. 1.6 9km S of Progreso, B.C., MX
  11. 2.1 10km W of Progreso, B.C., MX
  12. 2.4 10km WNW of Alberto Oviedo Mota, B.C., MX
  13. 2.3 10km W of Progreso, B.C., MX
  14. 2.0 9km W of Progreso, B.C., MX
  15. 1.5 8km WSW of Holtville, 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.