QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

1km NNW of Downey, CA

· 6.3 km deep · released about 8.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 30 kmOrange County 45 kmVentura County 103 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 1.6 (ml)
Depth
6.3 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Los Angeles County, 30 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2705 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 8.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.4 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 33.9465, -118.1357. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 30 km (19 mi) SSE of here earthquakes near Los Angeles County
Orange County, CA 45 km (28 mi) NW of here earthquakes near Orange County
Ventura County, CA 103 km (64 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

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

  1. 1.9 21km S of Rancho Palos Verdes, CA
  2. 1.5 5km SSW of Baldwin Hills, CA
  3. 2.0 7km E of Topanga, CA
  4. 1.8 21km SSW of San Pedro, CA
  5. 2.0 0km WNW of Manhattan Beach, CA
  6. 1.8 0km W of Manhattan Beach, CA
  7. 1.7 21km SSW of Seal Beach, CA
  8. 1.7 5km ENE of San Joaquin Hills, CA
  9. 1.7 1km ESE of Inglewood, CA
  10. 1.6 11km WSW of Manhattan Beach, CA
  11. 1.8 1km ENE of Panorama City, CA
  12. 1.8 4km SW of MacArthur Park, CA
  13. 2.0 1km ESE of Long Beach, CA
  14. 1.7 10km S of San Pedro, CA
  15. 2.0 2km SW of Montebello, 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 4.4 on 2018-08-29 — it released about 13,000 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.