QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

7km NW of Los Alamos, CA

· 2.1 km deep · released about 140 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Barbara County 39 kmSan Luis Obispo County 67 kmVentura County 120 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 2.4 (ml)
Depth
2.1 km below the surface
Felt
2 reports · strongest reported intensity IV
Nearest
Santa Barbara County, 39 km SE
Nearest mapped fault
Los Alamos fault, 4 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2986 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 140 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 78,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.9× the energy of this one
  4. This earthquake M 2.4 about 140 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 34.7890, -120.3302. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Barbara County, CA 39 km (24 mi) NW of here earthquakes near Santa Barbara County
San Luis Obispo County, CA 67 km (42 mi) S of here earthquakes near San Luis Obispo County
Ventura County, CA 120 km (74 mi) WNW of here earthquakes near Ventura County

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

Aftershocks so far

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

  1. 1.8 12km NNE of Los Olivos, CA
  2. 2.6 12km SSW of Lompoc, CA
  3. 2.1 13km SSW of Lompoc, CA
  4. 1.6 13km NNE of Los Alamos, CA
  5. 2.0 13km SSW of Lompoc, CA
  6. 2.0 8km ESE of Santa Ynez, CA
  7. 1.7 14km NE of Los Olivos, CA
  8. 2.1 0km NW of Pismo Beach, CA
  9. 2.4 1km NNW of Pismo Beach, CA
  10. 2.6 13km SSW of Lompoc, CA
  11. 2.1 5km SSW of Orcutt, CA
  12. 1.8 22km ENE of Los Olivos, CA
  13. 1.7 9km SSE of Santa Ynez, CA
  14. 2.2 7km ENE of Los Olivos, CA
  15. 2.2 7km ENE of Los Olivos, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.