QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

8km WSW of Westlake Village, CA

· 16 km deep · released about 110 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 35 kmLos Angeles County 58 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 2.4 (ml)
Depth
16 km below the surface
Felt
6 reports · strongest reported intensity III
Nearest
Ventura County, 35 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2344 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 110 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 99,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.8× the energy of this one
  4. This earthquake M 2.4 about 110 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 34.1155, -118.8853. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 35 km (22 mi) SE of here earthquakes near Ventura County
Los Angeles County, CA 58 km (36 mi) W 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

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

  1. 1.9 1km NW of San Fernando, CA
  2. 3.1 1km N of San Fernando, CA
  3. 2.1 1km NNW of San Fernando, CA
  4. 2.1 1km ESE of Sylmar, CA
  5. 1.9 1km W of Sylmar, CA
  6. 2.1 1km WSW of Sylmar, CA
  7. 2.4 1km WSW of Sylmar, CA
  8. 2.5 1km WSW of Sylmar, CA
  9. 4.2 1km SE of Sylmar, CA
  10. 1.8 14km SSE of Malibu Beach, CA
  11. 1.6 10km S of Malibu Beach, CA
  12. 2.2 4km NNW of Santa Monica, CA
  13. 1.5 3km SW of San Fernando, CA
  14. 2.0 2km SW of San Fernando, CA
  15. 1.7 15km SSW of Thousand Oaks, 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 4.1 on 2016-03-12 — it released about 440 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.