QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

4km NNE of El Segundo, CA

· 12 km deep · released about 1,700 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 30 kmOrange County 65 kmVentura County 82 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 3.2 (ml)
Depth
12 km below the surface
Felt
2309 reports · strongest reported intensity V
Measured shaking
intensity III (ShakeMap)
Nearest
Los Angeles County, 30 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1271 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2309 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 200,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,100× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,500× the energy of this one
  4. This earthquake M 3.2 about 1,700 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.7× 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 33.9498, -118.3947. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 30 km (19 mi) SSW of here earthquakes near Los Angeles County
Orange County, CA 65 km (40 mi) WNW of here earthquakes near Orange County
Ventura County, CA 82 km (51 mi) ESE of here earthquakes near Ventura County

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

Aftershocks so far

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

  1. 1.6 3km WNW of Sylmar, CA
  2. 1.8 7km ESE of San Pedro, CA
  3. 1.7 7km SE of San Pedro, CA
  4. 1.6 1km SE of Sylmar, CA
  5. 1.8 4km WSW of East Los Angeles, CA
  6. 1.6 2km SSE of Chatsworth, CA
  7. 2.5 8km NNW of Malibu, CA
  8. 2.1 11km SSW of Rancho Palos Verdes, CA
  9. 1.6 2km SSW of Sherman Oaks, CA
  10. 1.6 3km N of Sylmar, CA
  11. 1.6 2km ESE of Lawndale, CA
  12. 2.0 3km WSW of East Los Angeles, CA
  13. 3.6 3km WSW of East Los Angeles, CA
  14. 1.7 2km SE of Simi Valley, CA
  15. 2.4 1km NW of View Park-Windsor Hills, 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 4.5 on 2020-09-19 — it released about 120 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.