QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

5km WSW of Ojai, CA

· 11 km deep · released about 550 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 17 kmSanta Barbara County 69 kmLos Angeles County 99 kmKern County 113 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 2.8 (ml)
Depth
11 km below the surface
Felt
31 reports · strongest reported intensity III
Nearest
Ventura County, 17 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1604 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 31 people have reported feeling it to USGS.

How big was it?

This earthquake released about 550 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 28,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.8 about 550 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 34.4390, -119.2935. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 17 km (11 mi) WNW of here earthquakes near Ventura County
Santa Barbara County, CA 69 km (43 mi) E of here earthquakes near Santa Barbara County
Los Angeles County, CA 99 km (61 mi) WNW of here earthquakes near Los Angeles County
Kern County, CA 113 km (70 mi) SSW of here earthquakes near Kern County
San Luis Obispo County, CA 149 km (93 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

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

  1. 2.0 5km SSE of Piru, CA
  2. 1.9 18km NNW of Fillmore, CA
  3. 1.8 22km N of Ojai, CA
  4. 1.9 12km NNE of Goleta, CA
  5. 1.9 6km NNW of Ojai, CA
  6. 1.9 1km SSW of Port Hueneme, CA
  7. 1.6 8km NNW of Ventura, CA
  8. 1.8 6km NNW of Ventura, CA
  9. 2.3 17km S of Santa Barbara, CA
  10. 2.7 7km NNE of Ventura, CA
  11. 1.8 11km NW of Fillmore, CA
  12. 2.0 11km NNW of Fillmore, CA
  13. 1.5 10km ESE of Ojai, CA
  14. 2.8 10km ESE of Ojai, CA
  15. 1.7 7km NW of Fillmore, 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 86 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.