QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

6km NW of Pine Mountain Club, CA

· 9.2 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 58 kmKern County 67 kmSanta Barbara County 85 kmLos Angeles County 115 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 1.8 (ml)
Depth
9.2 km below the surface
Felt
no reports yet
Nearest
Ventura County, 58 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1453 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 34.8790, -119.2018. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 58 km (36 mi) N of here earthquakes near Ventura County
Kern County, CA 67 km (42 mi) SW of here earthquakes near Kern County
Santa Barbara County, CA 85 km (53 mi) ENE of here earthquakes near Santa Barbara County
Los Angeles County, CA 115 km (71 mi) NW of here earthquakes near Los Angeles County
San Luis Obispo County, CA 127 km (79 mi) ESE of here earthquakes near San Luis Obispo County

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

Aftershocks so far

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

  1. 1.9 15km NNW of Grapevine, CA
  2. 1.6 15km SSE of Arvin, CA
  3. 2.2 25km NNE of Montecito, CA
  4. 1.6 25km NNE of Montecito, CA
  5. 1.9 14km SSE of Buttonwillow, CA
  6. 1.8 3km W of Lamont, CA
  7. 1.6 2km WNW of Lamont, CA
  8. 1.7 24km NNE of Montecito, CA
  9. 2.0 11km SSW of Bakersfield, CA
  10. 2.2 5km ESE of Ojai, CA
  11. 2.3 5km ESE of Ojai, CA
  12. 2.1 6km ENE of Ojai, CA
  13. 1.8 8km SSW of Lamont, CA
  14. 1.6 13km NNE of Ojai, CA
  15. 1.6 14km SW of Lamont, 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 3,200 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.