QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

3km SSE of Frazier Park, CA

· 12 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 52 kmKern County 64 kmLos Angeles County 91 kmSanta Barbara County 105 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 2.3 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Ventura County, 52 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1701 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 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 34.7937, -118.9347. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 52 km (32 mi) NNE of here earthquakes near Ventura County
Kern County, CA 64 km (40 mi) SSW of here earthquakes near Kern County
Los Angeles County, CA 91 km (56 mi) NW of here earthquakes near Los Angeles County
Santa Barbara County, CA 105 km (65 mi) ENE of here earthquakes near Santa Barbara County

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

Aftershocks so far

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

  1. 1.9 4km NNW of Frazier Park, CA
  2. 1.5 12km NW of Grapevine, CA
  3. 1.5 11km SW of Arvin, CA
  4. 2.3 14km SSW of Arvin, CA
  5. 1.5 8km NNE of Grapevine, CA
  6. 1.5 13km WSW of Lake Hughes, CA
  7. 1.7 4km SSW of Frazier Park, CA
  8. 1.6 20km NW of Grapevine, CA
  9. 1.9 13km NNE of Piru, CA
  10. 1.5 10km NNW of Santa Paula, CA
  11. 2.2 6km NNE of Ojai, CA
  12. 1.7 12km NNW of Piru, CA
  13. 1.7 15km WSW of Pine Mountain Club, CA
  14. 1.8 10km NW of Santa Paula, CA
  15. 1.9 17km N of Piru, 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 560 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.