QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

3km ESE of Northridge, CA

· 13 km deep · released about 510 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 22 kmVentura County 60 kmOrange County 91 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 2.8 (ml)
Depth
13 km below the surface
Felt
98 reports · strongest reported intensity III
Nearest
Los Angeles County, 22 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2791 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 98 people have reported feeling it to USGS.

How big was it?

This earthquake released about 510 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 30,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 21,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 510 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 34.2257, -118.5015. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 22 km (14 mi) W of here earthquakes near Los Angeles County
Ventura County, CA 60 km (37 mi) ESE of here earthquakes near Ventura County
Orange County, CA 91 km (56 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

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

  1. 1.5 0km NNW of Paramount, CA
  2. 1.9 1km N of Huntington Park, CA
  3. 1.8 1km ENE of Gardena, CA
  4. 1.9 2km SSW of La Canada Flintridge, CA
  5. 1.9 17km W of Manhattan Beach, CA
  6. 1.6 1km NNW of Downey, CA
  7. 1.7 4km WSW of Marina del Rey, CA
  8. 1.7 3km WNW of Inglewood, CA
  9. 1.5 1km NE of Westwood, CA
  10. 1.8 1km WNW of Century City, CA
  11. 2.1 0km NNW of Century City, CA
  12. 1.5 0km NNW of Century City, CA
  13. 1.6 0km WNW of Century City, CA
  14. 2.9 0km SSW of Century City, CA
  15. 1.5 2km WNW of Willowbrook, 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.