QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

13km WSW of Lake Nacimiento, CA

· 6.8 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Luis Obispo County 62 kmMonterey County 66 kmSan Benito County 101 kmKings County 116 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 1.5 (md)
Depth
6.8 km below the surface
Felt
no reports yet
Nearest
San Luis Obispo County, 62 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2279 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 35.7007, -121.0185. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Luis Obispo County, CA 62 km (39 mi) NW of here earthquakes near San Luis Obispo County
Monterey County, CA 66 km (41 mi) SSE of here earthquakes near Monterey County
San Benito County, CA 101 km (63 mi) S of here earthquakes near San Benito County
Kings County, CA 116 km (72 mi) WSW of here earthquakes near Kings County

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

Aftershocks so far

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

  1. 1.8 6km W of Santa Margarita, CA
  2. 2.6 11km NNE of San Simeon, CA
  3. 2.6 29km WSW of San Simeon, CA
  4. 1.7 18km SSE of Lopez Point, CA
  5. 1.6 2km NNW of Cayucos, CA
  6. 2.6 19km SSE of Lopez Point, CA
  7. 1.6 17km NNW of San Simeon, CA
  8. 1.6 6km S of San Lucas, CA
  9. 1.7 16km NNW of San Simeon, CA
  10. 1.8 22km N of San Simeon, CA
  11. 1.8 26km NNW of San Simeon, CA
  12. 1.7 12km NNE of Cayucos, CA
  13. 1.9 26km NW of San Simeon, CA
  14. 1.6 4km SW of Paso Robles, CA
  15. 1.7 6km E of Atascadero, 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.