QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

6km SW of Calabasas, CA

· 9.5 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 40 kmVentura County 49 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
9.5 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
Los Angeles County, 40 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2605 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 34.1178, -118.6823. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 40 km (25 mi) WSW of here earthquakes near Los Angeles County
Ventura County, CA 49 km (31 mi) ESE of here earthquakes near Ventura County
Orange County, CA 97 km (60 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

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

  1. 2.0 5km NNW of Pacoima, CA
  2. 1.5 1km W of Willowbrook, CA
  3. 1.6 2km SSE of Granada Hills, CA
  4. 1.7 3km NE of Granada Hills, CA
  5. 2.4 3km NNE of Granada Hills, CA
  6. 3.6 4km NNE of Granada Hills, CA
  7. 1.6 1km SE of Compton, CA
  8. 1.9 2km NNE of Maywood, CA
  9. 1.6 10km NNE of Valencia, CA
  10. 1.5 6km WSW of Malibu, CA
  11. 2.0 20km SSE of Port Hueneme, CA
  12. 1.6 0km WSW of Century City, CA
  13. 1.8 20km S of Malibu, CA
  14. 1.6 5km SSE of Las Flores, CA
  15. 1.6 18km SSE of Port Hueneme, 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.