QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

4km SW of Santa Paula, CA

· 11 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 5 kmLos Angeles County 78 kmSanta Barbara County 89 kmKern County 118 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 1.7 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Ventura County, 5 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1627 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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 34.3283, -119.0963. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 5 km (3 mi) SE of here earthquakes near Ventura County
Los Angeles County, CA 78 km (49 mi) W of here earthquakes near Los Angeles County
Santa Barbara County, CA 89 km (56 mi) ESE of here earthquakes near Santa Barbara County
Kern County, CA 118 km (73 mi) SSW of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 2.6 5km WSW of Ojai, CA
  2. 2.0 4km ENE of Simi Valley, CA
  3. 1.6 10km NNW of Piru, CA
  4. 1.7 13km NNW of Fillmore, CA
  5. 1.7 12km N of Piru, CA
  6. 1.7 12km N of Piru, CA
  7. 1.8 16km NE of Ojai, CA
  8. 1.5 14km NNE of Ojai, CA
  9. 2.0 14km NNE of Ojai, CA
  10. 1.5 3km SE of Camarillo, CA
  11. 1.6 7km NNE of Ventura, CA
  12. 1.9 15km NE of Ojai, CA
  13. 1.6 14km WNW of Malibu, CA
  14. 1.5 18km NNE of Montecito, CA
  15. 1.8 3km E 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 4.1 on 2016-03-12 — it released about 4,000 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.