QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

47km SSW of Progreso, B.C., MX

· -0.1 km deep · released about 14 lb of TNT

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10 km30 km60 km120 km N Imperial County 103 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 1.8 (ml)
Depth
-0.1 km below the surface
Felt
no reports yet
Nearest
Imperial County, 103 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3258 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 32.1712, -115.7213. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Imperial County, CA 103 km (64 mi) SSW of here earthquakes near Imperial County
San Diego County, CA 137 km (85 mi) SE 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

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

  1. 2.0 9km W of Progreso, B.C., MX
  2. 1.5 10km W of Progreso, B.C., MX
  3. 2.0 12km W of Delta, B.C., MX
  4. 2.1 10km W of Progreso, B.C., MX
  5. 2.4 11km WNW of Alberto Oviedo Mota, B.C., MX
  6. 2.1 12km W of Delta, B.C., MX
  7. 2.2 16km WSW of Delta, B.C., MX
  8. 2.1 11km S of Progreso, B.C., MX
  9. 3.1 14km W of Alberto Oviedo Mota, B.C., MX
  10. 2.2 13km WSW of Delta, B.C., MX
  11. 1.9 17km WSW of Delta, B.C., MX
  12. 1.6 14km WNW of Progreso, B.C., MX
  13. 2.1 11km S of Progreso, B.C., MX
  14. 1.8 10km S of Progreso, B.C., MX
  15. 1.5 8km W of Progreso, 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.