QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

7km N of Ventura, CA

· 7.5 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 8 kmSanta Barbara County 79 kmLos Angeles County 89 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 1.5 (ml)
Depth
7.5 km below the surface
Felt
no reports yet
Nearest
Ventura County, 8 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3258 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 34.3340, -119.2152. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 8 km (5 mi) WSW of here earthquakes near Ventura County
Santa Barbara County, CA 79 km (49 mi) ESE of here earthquakes near Santa Barbara County
Los Angeles County, CA 89 km (55 mi) W of here earthquakes near Los Angeles County
Kern County, CA 121 km (75 mi) SSW of here earthquakes near Kern County
San Luis Obispo County, CA 163 km (101 mi) SE 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

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

  1. 1.7 14km SSE of Santa Barbara, CA
  2. 2.0 7km S of Montecito, CA
  3. 2.5 9km WNW of Malibu, CA
  4. 2.6 21km S of Port Hueneme, CA
  5. 1.6 8km ESE of Carpinteria, CA
  6. 2.1 20km WSW of Ventura, CA
  7. 1.8 14km SSE of Santa Barbara, CA
  8. 1.8 15km SSE of Santa Barbara, CA
  9. 2.1 9km WNW of Malibu, CA
  10. 1.5 2km ENE of Simi Valley, CA
  11. 2.4 15km WNW of Malibu, CA
  12. 1.7 11km N of Piru, CA
  13. 2.3 21km NNW of Santa Cruz Is. (E end), CA
  14. 2.0 14km SW of Port Hueneme, CA
  15. 1.7 6km ESE of Port Hueneme, 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 7,700 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.