QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

10km WSW of Malibu, CA

· 15 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 48 kmLos Angeles County 65 kmOrange County 110 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 3.3 (ml)
Depth
15 km below the surface
Felt
342 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
Nearest
Ventura County, 48 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 297 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 342 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,100× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.7× more

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 33.9705, -118.9087. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 48 km (30 mi) SSE of here earthquakes near Ventura County
Los Angeles County, CA 65 km (40 mi) WSW of here earthquakes near Los Angeles County
Orange County, CA 110 km (68 mi) WNW of here earthquakes near Orange County
Santa Barbara County, CA 121 km (75 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

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

  1. 2.0 1km SSW of Sherman Oaks, CA
  2. 1.7 0km SE of Century City, CA
  3. 1.6 6km ESE of Agoura Hills, CA
  4. 1.7 4km SSE of Encino, CA
  5. 1.6 1km SE of Malibu Beach, CA
  6. 2.3 5km W of El Segundo, CA
  7. 1.8 2km S of Sherman Oaks, CA
  8. 1.6 6km S of Piru, CA
  9. 1.5 4km SW of Encino, CA
  10. 3.0 22km SE of Santa Cruz Is. (E end), CA
  11. 3.3 17km W of Malibu, CA
  12. 1.6 5 km SSW of Malibu, California
  13. 2.0 5 km ESE of Piru, California
  14. 1.6 4 km NNW of Malibu, California
  15. 1.9 3 km NNW of Malibu, California

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.