QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

16km SSE of Port Hueneme, CA

· 0.9 km deep · released about 91 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 39 kmLos Angeles County 83 kmSanta Barbara County 102 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 2.3 (ml)
Depth
0.9 km below the surface
Felt
no reports yet
Nearest
Ventura County, 39 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1705 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 91 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 91 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 34.0095, -119.1302. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 39 km (24 mi) S of here earthquakes near Ventura County
Los Angeles County, CA 83 km (51 mi) WSW of here earthquakes near Los Angeles County
Santa Barbara County, CA 102 km (63 mi) SE 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. 2.9 35km NW of Santa Barbara Is., CA
  2. 1.8 20km SSE of Port Hueneme, CA
  3. 1.7 8km WSW of Santa Paula, CA
  4. 2.2 7km NNE of Malibu, CA
  5. 1.7 4km SW of Santa Paula, CA
  6. 1.7 4km WSW of Ojai, CA
  7. 2.5 19km SSE of Port Hueneme, CA
  8. 2.0 19km SSE of Port Hueneme, CA
  9. 1.7 4km SE of Las Flores, CA
  10. 1.8 5km W of Malibu, CA
  11. 1.7 4km WSW of Ojai, CA
  12. 1.8 4km N of Topanga, CA
  13. 1.5 10km NNW of Santa Paula, CA
  14. 2.9 14km SSE of Malibu, CA
  15. 2.3 5km WSW of Ojai, 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 4.0 on 2020-01-02 — it released about 370 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.