QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

5km SW of Imperial, CA

· 9.7 km deep · released about 58 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Imperial County 34 kmRiverside County 108 kmSan Diego County 112 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 2.2 (ml)
Depth
9.7 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Imperial County, 34 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2985 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 58 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 260,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 58 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 32.8192, -115.6052. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Imperial County, CA 34 km (21 mi) SW of here earthquakes near Imperial County
Riverside County, CA 108 km (67 mi) SSE of here earthquakes near Riverside County
San Diego County, CA 112 km (69 mi) ESE 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. 2.1 9km SE of Puebla, B.C., MX
  2. 1.6 7km WNW of Westmorland, CA
  3. 2.8 13km S of Progreso, B.C., MX
  4. 1.8 7km NE of Imperial, CA
  5. 2.0 10km SW of Niland, CA
  6. 1.9 9km SW of Niland, CA
  7. 2.1 10km SW of Niland, CA
  8. 1.6 6km NE of Imperial, CA
  9. 1.9 23km SSW of Puebla, B.C., MX
  10. 1.9 8km SW of Holtville, CA
  11. 1.7 10km SW of Niland, CA
  12. 1.5 8km ENE of El Centro, CA
  13. 2.3 9km N of Westmorland, CA
  14. 2.1 9km N of Westmorland, CA
  15. 1.8 24km SE of Ocotillo Wells, CA

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 4.0 on 2016-07-31 — it released about 580 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.