QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

4km NNW of Frazier Park, CA

· 2.2 km deep · released about 1,800 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 57 kmKern County 59 kmLos Angeles County 97 kmSanta Barbara County 104 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 3.2 (ml)
Depth
2.2 km below the surface
Felt
55 reports · strongest reported intensity IV
Nearest
Ventura County, 57 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3282 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 55 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,800 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,800× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× more

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 34.8498, -118.9638. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 57 km (35 mi) NNE of here earthquakes near Ventura County
Kern County, CA 59 km (37 mi) SSW of here earthquakes near Kern County
Los Angeles County, CA 97 km (60 mi) NW of here earthquakes near Los Angeles County
Santa Barbara County, CA 104 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

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

  1. 1.9 15km SE of Maricopa, CA
  2. 1.6 11km N of Piru, CA
  3. 1.6 7km WSW of Tehachapi, CA
  4. 1.6 9km WNW of Lake Hughes, CA
  5. 2.3 13km N of Santa Paula, CA
  6. 1.8 14km N of Santa Paula, CA
  7. 1.6 18km S of Maricopa, CA
  8. 1.9 9km ESE of Maricopa, CA
  9. 2.1 14km N of Santa Paula, CA
  10. 1.5 4km W of Lebec, CA
  11. 3.1 4km W of Lebec, CA
  12. 1.5 17km S of Maricopa, CA
  13. 2.5 17km S of Maricopa, CA
  14. 1.6 23km SSW of Frazier Park, CA
  15. 1.6 18km WNW of Grapevine, 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 26 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.