QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

13km WNW of Malibu, CA

· 3.3 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 38 kmLos Angeles County 63 kmSanta Barbara County 114 kmOrange County 115 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
3.3 km below the surface
Felt
no reports yet
Nearest
Ventura County, 38 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1316 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 34.0635, -118.9315. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 38 km (23 mi) SSE of here earthquakes near Ventura County
Los Angeles County, CA 63 km (39 mi) WSW of here earthquakes near Los Angeles County
Santa Barbara County, CA 114 km (71 mi) ESE of here earthquakes near Santa Barbara County
Orange County, CA 115 km (71 mi) WNW of here earthquakes near Orange 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. 2.1 3 km NNE of Granada Hills, CA
  2. 2.7 27 km SSW of Port Hueneme, CA
  3. 1.6 6km NNE of Chatsworth, CA
  4. 2.0 18km W of Malibu, CA
  5. 1.5 1km SSW of Century City, CA
  6. 1.6 10km WSW of Ventura, CA
  7. 1.6 8km N of Chatsworth, CA
  8. 2.6 17km SE of Santa Cruz Is. (E end), CA
  9. 1.8 31km NE of Santa Barbara Is., CA
  10. 2.0 18km SSW of Malibu, CA
  11. 3.7 21km SSW of Malibu, CA
  12. 1.7 26km S of Malibu, CA
  13. 2.0 13km WNW of Malibu, CA
  14. 1.8 10km WSW of Malibu, CA
  15. 1.5 6km ESE of Moorpark, 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 4.2 on 2023-01-25 — it released about 5,200 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.