QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

10km WSW of Delta, B.C., MX

Yes. A magnitude 2.3 earthquake was recorded 10km WSW of Delta, B.C., MX, 76 km (47 mi) WSW of Yuma, AZ, at 1:04 am PDT on 5 August 2018 (08:04 UTC), 3.4 km deep. 2 people have reported feeling it to USGS.

76 km (47 mi) WSW of Yuma, AZ

· 3.4 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Imperial County 79 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 2.3 (ml)
Depth
3.4 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Imperial County, 79 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3020 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 20 km (12 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 85 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 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 32.3277, -115.2990. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Imperial County, CA 79 km (49 mi) N earthquakes near Imperial County

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

Aftershocks so far

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

  1. 2.7 8km NW of Delta, B.C., MX
  2. 3.3 6km NW of Delta, B.C., MX
  3. 2.3 9km WNW of Progreso, B.C., MX
  4. 1.5 8km WSW of Progreso, B.C., MX
  5. 2.0 7km NNW of Delta, B.C., MX
  6. 1.7 8km SW of Progreso, B.C., MX
  7. 2.9 5km WNW of Estacion Coahuila, B.C., MX
  8. 3.3 6km WSW of Estacion Coahuila, B.C., MX
  9. 2.2 3km W of Estacion Coahuila, B.C., MX
  10. 1.6 10km S of Progreso, B.C., MX
  11. 2.0 20km SSE of Progreso, B.C., MX
  12. 1.9 6km E of Puebla, B.C., MX
  13. 2.2 6km E of Puebla, B.C., MX
  14. 2.3 7km ESE of Puebla, B.C., MX
  15. 2.8 24km SSW 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.

On USGS

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