QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

14km NE of Los Olivos, CA

· 4.3 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Barbara County 25 kmSan Luis Obispo County 80 kmVentura County 92 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
4.3 km below the surface
Felt
no reports yet
Nearest
Santa Barbara County, 25 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2729 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 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 34.7593, -120.0138. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Barbara County, CA 25 km (15 mi) N of here earthquakes near Santa Barbara County
San Luis Obispo County, CA 80 km (50 mi) SSE of here earthquakes near San Luis Obispo County
Ventura County, CA 92 km (57 mi) WNW of here earthquakes near Ventura County
Kern County, CA 134 km (83 mi) WSW of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 1.9 7km NNW of Los Olivos, CA
  2. 1.8 11km ENE of Santa Maria, CA
  3. 1.6 19km SSE of Solvang, CA
  4. 1.5 18km SSE of Solvang, CA
  5. 1.9 12km W of Isla Vista, CA
  6. 1.6 10km NNE of Los Alamos, CA
  7. 3.3 13km W of Isla Vista, CA
  8. 2.1 5km SSE of Santa Ynez, CA
  9. 2.4 5km SSE of Santa Ynez, CA
  10. 3.9 6km SSE of Santa Ynez, CA
  11. 1.7 13km NNE of Los Olivos, CA
  12. 1.7 8km WSW of Isla Vista, CA
  13. 1.5 14km W of Isla Vista, CA
  14. 1.9 23 km WSW of Maricopa, CA
  15. 2.7 6km NNE of Los Alamos, 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 2,700 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.