QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

10km W of El Sauzal, B.C., MX

· 16 km deep · released about 14 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 1.8 (ml)
Depth
16 km below the surface
Felt
14 reports · strongest reported intensity V
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1525 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 14 people have reported feeling it to USGS.

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 31.8982, -116.7937. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 2.7 10 km W of El Sauzal, B.C., MX
  2. 1.9 25 km N of El Sauzal, B.C., MX
  3. 2.1 13 km WSW of Maneadero, B.C., MX
  4. 2.0 34 km NE of Ensenada, B.C., MX
  5. 2.6 28 km E of Primo Tapia, B.C., MX
  6. 2.1 36 km ENE of Ensenada, B.C., MX
  7. 2.6 32 km E of Primo Tapia, B.C., MX
  8. 2.1 19 km NNE of El Sauzal, B.C., MX
  9. 1.7 9 km W of Primo Tapia, B.C., MX
  10. 3.2 48 km SW of Primo Tapia, B.C., MX
  11. 2.0 11 km NE of El Sauzal, B.C., MX
  12. 1.9 25 km WSW of El Sauzal, B.C., MX
  13. 2.2 30 km NNE of Ensenada, B.C., MX
  14. 1.6 33 km ENE of Ensenada, B.C., MX
  15. 1.8 20 km WSW of Primo Tapia, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2022-04-15 — it released about 14,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.