QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

21 km NNW of Lopez Point, CA

· 7.6 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monterey County 36 kmSan Benito County 75 kmSanta Cruz County 98 kmSanta Clara County 117 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 2.1 (md)
Depth
7.6 km below the surface
Felt
no reports yet
Nearest
Monterey County, 36 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 863 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 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 36.1683, -121.7115. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monterey County, CA 36 km (23 mi) WSW of here earthquakes near Monterey County
San Benito County, CA 75 km (46 mi) SW of here earthquakes near San Benito County
Santa Cruz County, CA 98 km (61 mi) SSE of here earthquakes near Santa Cruz County
Santa Clara County, CA 117 km (73 mi) S of here earthquakes near Santa Clara County
San Luis Obispo County, CA 143 km (89 mi) NW of here earthquakes near San Luis Obispo County
Merced County, CA 144 km (90 mi) SW of here earthquakes near Merced County

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

Aftershocks so far

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

  1. 1.5 18 km SW of Greenfield, CA
  2. 2.2 3 km ESE of Lopez Point, CA
  3. 1.5 2 km SE of Lopez Point, CA
  4. 1.6 28 km S of Lopez Point, CA
  5. 1.5 21 km SSE of Lopez Point, CA
  6. 2.1 22 km SSE of Lopez Point, CA
  7. 2.0 12 km SW of Gonzales, CA
  8. 1.6 22 km SSE of Lopez Point, CA
  9. 2.1 26 km SSE of Lopez Point, CA
  10. 1.6 26 km SSE of Lopez Point, CA
  11. 2.1 25 km NNW of San Simeon, CA
  12. 1.6 8 km SSE of Carmel By The Sea, CA
  13. 1.5 20 km NW of Lopez Point, CA
  14. 3.1 27 km SE of Lopez Point, CA
  15. 1.6 25 km S of Lopez Point, 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.