QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

6km W of Ventura, CA

· 15 km deep · released about 2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 17 kmSanta Barbara County 74 kmLos Angeles County 95 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 3.4 (ml)
Depth
15 km below the surface
Felt
997 reports · strongest reported intensity IV
Measured shaking
intensity V (ShakeMap)
Nearest
Ventura County, 17 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 285 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 997 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 83,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,700× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,600× the energy of this one
  4. This earthquake M 3.4 about 2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.3× 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 34.2762, -119.2937. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 17 km (11 mi) WSW of here earthquakes near Ventura County
Santa Barbara County, CA 74 km (46 mi) ESE of here earthquakes near Santa Barbara County
Los Angeles County, CA 95 km (59 mi) W of here earthquakes near Los Angeles County
Kern County, CA 130 km (81 mi) SSW of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 2.0 20km SSE of Port Hueneme, CA
  2. 1.6 6km N of Ventura, CA
  3. 1.6 5km WSW of Ojai, CA
  4. 1.6 18km SSE of Port Hueneme, CA
  5. 2.3 6km WSW of Ventura, CA
  6. 1.8 7km W of Ventura, CA
  7. 1.6 19km S of Port Hueneme, CA
  8. 2.4 6km W of Ventura, CA
  9. 1.6 8km WSW of Ventura, CA
  10. 1.5 5km W of Ventura, CA
  11. 1.5 7km W of Ventura, CA
  12. 1.9 6km WNW of Ventura, CA
  13. 2.9 5km W of Ventura, CA
  14. 1.8 17 km SSE of Carpinteria, CA
  15. 2.0 5km WNW of Ventura, 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 12 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.