QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

19km ESE of Ocotillo, CA

· 8.2 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Imperial County 59 kmSan Diego County 98 kmRiverside County 119 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
8.2 km below the surface
Felt
no reports yet
Nearest
Imperial County, 59 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1747 days ago

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

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 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× 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 32.6722, -115.8088. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Imperial County, CA 59 km (37 mi) SW of here earthquakes near Imperial County
San Diego County, CA 98 km (61 mi) ESE of here earthquakes near San Diego County
Riverside County, CA 119 km (74 mi) S of here earthquakes near Riverside County

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

Aftershocks so far

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

  1. 1.9 10km NNW of Ocotillo, CA
  2. 1.6 15km W of Imperial, CA
  3. 1.5 2km SSE of Westmorland, CA
  4. 1.8 20km ESE of Ocotillo, CA
  5. 1.8 2km SSE of Westmorland, CA
  6. 2.5 1km SE of Westmorland, CA
  7. 2.7 1km SE of Westmorland, CA
  8. 1.7 8km NE of Imperial, CA
  9. 1.7 5km ENE of Puebla, B.C., MX
  10. 1.9 8km NE of Imperial, CA
  11. 3.0 16km NNW of Ocotillo, CA
  12. 1.7 7km SW of Holtville, CA
  13. 1.8 21km N of Ocotillo, CA
  14. 1.7 22km WSW of Westmorland, CA
  15. 1.9 9km ENE of Mexicali, 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 4.9 on 2020-10-01 — it released about 53,000 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.