QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

3km SSE of Chatsworth, CA

· 2.5 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 30 kmVentura County 52 kmOrange County 97 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 1.8 (ml)
Depth
2.5 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Los Angeles County, 30 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2338 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 34.2300, -118.5850. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 30 km (19 mi) W of here earthquakes near Los Angeles County
Ventura County, CA 52 km (33 mi) ESE of here earthquakes near Ventura County
Orange County, CA 97 km (60 mi) NW of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 1.8 14km SSE of Malibu Beach, CA
  2. 1.6 10km S of Malibu Beach, CA
  3. 2.2 4km NNW of Santa Monica, CA
  4. 1.5 3km SW of San Fernando, CA
  5. 2.0 2km SW of San Fernando, CA
  6. 1.7 1km NNE of Hollywood, CA
  7. 1.7 15km SSW of Thousand Oaks, CA
  8. 2.1 5km NNW of Sylmar, CA
  9. 1.8 18km S of Camarillo, CA
  10. 1.6 14km WNW of Malibu, CA
  11. 2.5 1km NNW of San Fernando, CA
  12. 1.6 2km NNW of Pacoima, CA
  13. 1.6 2 km NE of Silver Lake, CA
  14. 2.1 2km E of Lennox, CA
  15. 1.9 2km ESE of Lennox, 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.