QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

36km E of Ensenada, B.C., MX

Yes. A magnitude 2.3 earthquake was recorded 36km E of Ensenada, B.C., MX, at 10:04 am PDT on 17 April 2018 (17:04 UTC), 13 km deep.

· 13 km deep · released about 72 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 2.3 (ml)
Depth
13 km below the surface
Felt
no reports yet
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3031 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 14 km (9 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 31.9168, -116.2463. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 2.3 50km SSW of Progreso, B.C., MX
  2. 2.6 38km SSE of Tecate, B.C., MX
  3. 1.7 60km WSW of Alberto Oviedo Mota, B.C., MX
  4. 2.2 32km E of Primo Tapia, B.C., MX
  5. 2.5 22km ENE of Maneadero, B.C., MX
  6. 2.1 34km ENE of Ensenada, B.C., MX
  7. 2.8 71km WSW of Alberto Oviedo Mota, B.C., MX
  8. 2.4 59km E of Maneadero, B.C., MX
  9. 2.1 32km NE of Ensenada, B.C., MX
  10. 2.1 34km ENE of Ensenada, B.C., MX
  11. 1.8 45km ENE of Ensenada, B.C., MX
  12. 2.4 31km E of Primo Tapia, B.C., MX
  13. 2.3 53km ENE of Ensenada, B.C., MX
  14. 2.1 16km ESE of Maneadero, B.C., MX
  15. 2.1 36km NE of Ensenada, 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.