QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

20km S of Maricopa, CA

· 9.3 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 63 kmSanta Barbara County 69 kmKern County 81 kmSan Luis Obispo County 110 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
9.3 km below the surface
Felt
no reports yet
Nearest
Ventura County, 63 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3636 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 10 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 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 95× the energy of this one
  4. This earthquake M 1.7 about 10 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 34.8815, -119.4117. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 63 km (39 mi) NNW of here earthquakes near Ventura County
Santa Barbara County, CA 69 km (43 mi) NE of here earthquakes near Santa Barbara County
Kern County, CA 81 km (50 mi) SW of here earthquakes near Kern County
San Luis Obispo County, CA 110 km (68 mi) ESE of here earthquakes near San Luis Obispo County
Los Angeles County, CA 130 km (81 mi) NW of here earthquakes near Los Angeles 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. 1.6 15km NNE of Ojai, CA
  2. 1.7 10km ENE of Carpinteria, CA
  3. 1.7 20km W of Taft, CA
  4. 3.2 9km ESE of Maricopa, CA
  5. 2.0 17km S of Maricopa, CA
  6. 2.1 2km N of Ojai, CA
  7. 1.6 18km NNW of Pine Mountain Club, CA
  8. 1.5 2km N of Ojai, CA
  9. 1.6 4km S of Frazier Park, CA
  10. 1.6 12km WNW of Ojai, CA
  11. 1.7 1km NNW of Frazier Park, CA
  12. 1.8 3km NW of Frazier Park, CA
  13. 1.7 12km NW of Grapevine, CA
  14. 2.4 8km NW of Ojai, CA
  15. 1.6 4km NNW of Frazier Park, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.