QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

10km SSE of Santa Barbara, CA

· 11 km deep · released about 1.4 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Barbara County 42 kmVentura County 47 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 3.3 (ml)
Depth
11 km below the surface
Felt
261 reports · strongest reported intensity IV
Measured shaking
intensity III (ShakeMap)
Nearest
Santa Barbara County, 42 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1884 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 261 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 120,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,800× the energy of this one
  4. This earthquake M 3.3 about 1.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.9× 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 34.3427, -119.6487. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Barbara County, CA 42 km (26 mi) ESE of here earthquakes near Santa Barbara County
Ventura County, CA 47 km (29 mi) W of here earthquakes near Ventura County
San Luis Obispo County, CA 137 km (85 mi) SSE of here earthquakes near San Luis Obispo County
Kern County, CA 140 km (87 mi) SW of here earthquakes near Kern 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. 1.6 10km NW of Santa Paula, CA
  2. 3.9 10km NW of Santa Paula, CA
  3. 2.3 10km NW of Santa Paula, CA
  4. 2.0 10km NW of Santa Paula, CA
  5. 2.4 1km NW of Goleta, CA
  6. 1.6 6km W of Ojai, CA
  7. 1.9 1km WSW of Goleta, CA
  8. 1.8 18km SSW of Santa Barbara, CA
  9. 1.5 20km NNE of Carpinteria, CA
  10. 1.9 4km WSW of Ojai, CA
  11. 3.2 5km WSW of Ojai, CA
  12. 1.8 25km NNE of Montecito, CA
  13. 1.8 20km NNW of Santa Cruz Is. (E end), CA
  14. 2.2 21km SSW of Carpinteria, CA
  15. 1.9 21km NNW 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 2017-05-17 — it released about 13 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.