QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

7km ENE of Westmorland, CA

· 11 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Imperial County 19 kmRiverside County 84 kmSan Diego County 114 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 1.9 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Imperial County, 19 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3709 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 18 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 33.0665, -115.5583. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Imperial County, CA 19 km (12 mi) W of here earthquakes near Imperial County
Riverside County, CA 84 km (52 mi) SSE of here earthquakes near Riverside County
San Diego County, CA 114 km (71 mi) E 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

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

  1. 1.7 8km WSW of Holtville, CA
  2. 1.5 8km WSW of Holtville, CA
  3. 1.7 7km WSW of Holtville, CA
  4. 1.6 1km NW of Calexico, CA
  5. 1.9 8km WSW of Holtville, CA
  6. 1.6 9km ENE of Ocotillo Wells, CA
  7. 1.6 22km SW of Westmorland, CA
  8. 2.0 9km ENE of Ocotillo Wells, CA
  9. 1.5 10km NE of Calexico, CA
  10. 1.9 9km ENE of Ocotillo Wells, CA
  11. 1.8 14km WNW of Calipatria, CA
  12. 2.2 9km ENE of Ocotillo Wells, CA
  13. 1.7 13km WNW of Calipatria, CA
  14. 1.6 13km WNW of Calipatria, CA
  15. 1.5 12km SSE of Bombay Beach, 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.

On USGS

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