QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

5km S of Mexicali, B.C., MX

· 3.0 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Imperial County 49 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
3.0 km below the surface
Felt
7 reports · strongest reported intensity III
Nearest
Imperial County, 49 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2861 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 7 people have reported feeling it to USGS.

How big was it?

This earthquake released about 13 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 32.6097, -115.4745. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Imperial County, CA 49 km (31 mi) SSW of here earthquakes near Imperial County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 2.1 6km ENE of Imperial, CA
  2. 2.0 6km NE of Imperial, CA
  3. 2.8 6km NE of Imperial, CA
  4. 2.0 6km NE of Imperial, CA
  5. 1.6 6km ENE of Imperial, CA
  6. 1.9 5km SW of Imperial, CA
  7. 1.8 8km WNW of Holtville, CA
  8. 1.9 9km WNW of Imperial, CA
  9. 1.9 9km W of Imperial, CA
  10. 1.7 5km WNW of El Centro, CA
  11. 2.3 8km W of Alberto Oviedo Mota, B.C., MX
  12. 2.5 8km WSW of Holtville, CA
  13. 1.6 11km ESE of Puebla, B.C., MX
  14. 2.0 23km SSW of Puebla, B.C., MX
  15. 2.4 8km ENE of Puebla, 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 4.8 on 2018-11-19 — it released about 40,000 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.