QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

17km S of Lopez Point, CA

· 12 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monterey County 46 kmSan Benito County 92 kmSan Luis Obispo County 112 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 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Monterey County, 46 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3153 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 35.8680, -121.5360. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monterey County, CA 46 km (29 mi) SSW of here earthquakes near Monterey County
San Benito County, CA 92 km (57 mi) SSW of here earthquakes near San Benito County
San Luis Obispo County, CA 112 km (69 mi) WNW 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

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

  1. 1.6 12km NE of San Simeon, CA
  2. 2.4 8km SW of San Lucas, CA
  3. 1.7 14km ENE of San Simeon, CA
  4. 1.7 12km WSW of San Ardo, CA
  5. 2.3 9km W of San Simeon, CA
  6. 2.5 19km S of Lopez Point, CA
  7. 1.6 17km N of San Simeon, CA
  8. 1.6 10km E of San Simeon, CA
  9. 1.9 10km W of San Simeon, CA
  10. 1.5 13km NE of San Simeon, CA
  11. 2.2 10km NE of San Simeon, CA
  12. 1.6 10km ENE of San Simeon, CA
  13. 1.5 11km NE of San Simeon, CA
  14. 1.7 17km NW of San Simeon, CA
  15. 1.6 12km NE of San Simeon, 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.