QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

2km WNW of Willowbrook, CA

· 15 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 30 kmOrange County 54 kmVentura County 92 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
15 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 30 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2729 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 5.6 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 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 33.9243, -118.2797. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 30 km (19 mi) S of here earthquakes near Los Angeles County
Orange County, CA 54 km (34 mi) WNW of here earthquakes near Orange County
Ventura County, CA 92 km (57 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

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

  1. 1.8 1km ENE of Panorama City, CA
  2. 1.8 4km SW of MacArthur Park, CA
  3. 2.0 1km ESE of Long Beach, CA
  4. 1.7 10km S of San Pedro, CA
  5. 2.0 2km SW of Montebello, CA
  6. 1.6 2km N of Inglewood, CA
  7. 2.8 12km S of Malibu, CA
  8. 1.8 6km SW of Calabasas, CA
  9. 1.5 6km ESE of San Pedro, CA
  10. 2.1 7km E of Yorba Linda, CA
  11. 1.8 5km SE of Agoura Hills, CA
  12. 1.9 1km WSW of Villa Park, CA
  13. 1.8 5km ESE of San Pedro, CA
  14. 2.3 2km NE of Granada Hills, CA
  15. 2.2 3km N of East Los Angeles, 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.