QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

6km NNW of Ventura, CA

· -0.2 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 12 kmSanta Barbara County 75 kmLos Angeles County 93 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 1.8 (ml)
Depth
-0.2 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Ventura County, 12 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1503 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 34.3175, -119.2597. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 12 km (8 mi) WSW of here earthquakes near Ventura County
Santa Barbara County, CA 75 km (47 mi) ESE of here earthquakes near Santa Barbara County
Los Angeles County, CA 93 km (58 mi) W of here earthquakes near Los Angeles County
Kern County, CA 124 km (77 mi) SSW of here earthquakes near Kern County
San Luis Obispo County, CA 161 km (100 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

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

  1. 2.2 1km NNW of Santa Barbara, CA
  2. 2.2 25km NNE of Montecito, CA
  3. 1.6 25km NNE of Montecito, CA
  4. 2.0 9km WNW of Fillmore, CA
  5. 1.7 13km WNW of Malibu, CA
  6. 1.7 24km NNE of Montecito, CA
  7. 1.5 7km W of Fillmore, CA
  8. 2.8 26km SE of Santa Cruz Is. (E end), CA
  9. 1.7 10km NNW of Montecito, CA
  10. 2.0 12km WNW of Malibu, CA
  11. 2.2 5km ESE of Ojai, CA
  12. 2.3 15km SSE of Port Hueneme, CA
  13. 1.9 18km NNE of Santa Cruz Is. (E end), CA
  14. 1.8 18km NNE of Santa Cruz Is. (E end), CA
  15. 2.2 19km NNE of Santa Cruz Is. (E end), 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 3,700 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.