QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

1km W of San Gabriel, CA

· 9.1 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 18 kmOrange County 56 kmVentura County 98 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 1.9 (ml)
Depth
9.1 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Los Angeles County, 18 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3672 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 34.0953, -118.1150. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 18 km (11 mi) SE of here earthquakes near Los Angeles County
Orange County, CA 56 km (35 mi) NNW of here earthquakes near Orange County
Ventura County, CA 98 km (61 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

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

  1. 1.8 8km SSW of Pearblossum, CA
  2. 1.9 1km NNW of View Park-Windsor Hills, CA
  3. 1.8 1km ENE of Inglewood, CA
  4. 2.2 2km ENE of Inglewood, CA
  5. 2.4 1km ENE of Brea, CA
  6. 1.7 7km WSW of Huntington Beach, CA
  7. 1.6 2km N of Costa Mesa, CA
  8. 2.1 7km WSW of Huntington Beach, CA
  9. 2.1 7km WSW of Santa Monica, CA
  10. 1.8 8km SSW of Pearblossum, CA
  11. 2.6 7km NNE of Lake View Terrace, CA
  12. 1.7 6km SW of Chino Hills, CA
  13. 1.6 4km N of Yorba Linda, CA
  14. 2.0 3km WSW of Panorama City, CA
  15. 1.6 4km WSW of Compton, 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.