QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

11km SW of Westlake Village, CA

· 15 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 37 kmLos Angeles County 60 kmOrange County 113 kmSanta Barbara County 116 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 1.7 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Ventura County, 37 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2984 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 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 34.0833, -118.9023. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 37 km (23 mi) SE of here earthquakes near Ventura County
Los Angeles County, CA 60 km (37 mi) WSW of here earthquakes near Los Angeles County
Orange County, CA 113 km (70 mi) WNW of here earthquakes near Orange County
Santa Barbara County, CA 116 km (72 mi) ESE of here earthquakes near Santa Barbara County

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

Aftershocks so far

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

  1. 2.6 3km ESE of Northridge, CA
  2. 2.6 2km ESE of Santa Monica, CA
  3. 1.8 3km NNE of Granada Hills, CA
  4. 1.6 15km S of Las Flores, CA
  5. 2.2 2km ENE of Simi Valley, CA
  6. 1.6 2km E of Canoga Park, CA
  7. 1.8 2km W of El Segundo, CA
  8. 2.6 18km W of Malibu, CA
  9. 1.6 7km SW of Valencia, CA
  10. 1.6 4km SW of Baldwin Hills, CA
  11. 1.8 7km WSW of Valencia, CA
  12. 2.4 7km WSW of Valencia, CA
  13. 2.1 7km WSW of Valencia, CA
  14. 1.6 12km WNW of Malibu, CA
  15. 2.2 4km WSW of Panorama City, 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.