QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

14km N of Castaic, CA

· 8.9 km deep · released about 8.1 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 53 kmLos Angeles County 58 kmKern 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 1.6 (ml)
Depth
8.9 km below the surface
Felt
no reports yet
Nearest
Ventura County, 53 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3421 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 8.1 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 1,900,000× 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 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 8.1 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 34.6090, -118.6417. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 53 km (33 mi) ENE of here earthquakes near Ventura County
Los Angeles County, CA 58 km (36 mi) NW of here earthquakes near Los Angeles County
Kern County, CA 82 km (51 mi) S of here earthquakes near Kern County
Orange County, CA 131 km (81 mi) NW of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 1.6 23km SSW of Frazier Park, CA
  2. 1.6 15km N of Fillmore, CA
  3. 1.7 14km N of Fillmore, CA
  4. 1.9 3km SE of Chatsworth, CA
  5. 1.8 19km ENE of Grapevine, CA
  6. 1.6 15km NNE of Ojai, CA
  7. 1.8 5km ENE of Lebec, CA
  8. 1.7 3km NW of Castaic, CA
  9. 3.4 3km NW of Castaic, CA
  10. 1.6 4km S of Frazier Park, CA
  11. 1.9 15km N of Santa Paula, CA
  12. 1.7 1km NNW of Frazier Park, CA
  13. 1.6 21km N of Fillmore, CA
  14. 1.8 3km NW of Frazier Park, CA
  15. 1.9 7km WSW of Santa Clarita, 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 4.1 on 2016-03-12 — it released about 5,800 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.