QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

1 km SSW of View Park-Windsor Hills, CA

· 11 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 25 kmOrange County 63 kmVentura County 83 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 1.5 (ml)
Depth
11 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Los Angeles County, 25 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 894 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 33.9873, -118.3515. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 25 km (15 mi) SSW of here earthquakes near Los Angeles County
Orange County, CA 63 km (39 mi) WNW of here earthquakes near Orange County
Ventura County, CA 83 km (52 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

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

  1. 1.5 4 km SSE of Highland Park, CA
  2. 1.6 4 km SSE of Highland Park, CA
  3. 2.1 4 km SSE of Highland Park, CA
  4. 2.0 4 km SSE of Highland Park, CA
  5. 4.4 4 km SSE of Highland Park, CA
  6. 1.7 0 km ESE of Brea, CA
  7. 1.7 4 km SSW of South Pasadena, CA
  8. 1.9 8 km SSW of Santa Clarita, CA
  9. 1.9 7 km NNW of Malibu, CA
  10. 2.5 3 km S of Charter Oak, CA
  11. 3.1 22 km SSE of Malibu, CA
  12. 1.8 4 km SSE of Highland Park, CA
  13. 1.7 13 km SSE of San Pedro, CA
  14. 2.3 4 km SSE of Highland Park, CA
  15. 2.4 2 km NNE of Malibu, 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 36,000 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.