QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

12km N of Grapevine, CA

· 10 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kern County 38 kmVentura County 79 kmLos Angeles County 114 kmSanta Barbara County 115 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 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Kern County, 38 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2643 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 40 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 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 35.0500, -118.9447. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kern County, CA 38 km (24 mi) SSW of here earthquakes near Kern County
Ventura County, CA 79 km (49 mi) NNE of here earthquakes near Ventura County
Los Angeles County, CA 114 km (71 mi) NNW of here earthquakes near Los Angeles County
Santa Barbara County, CA 115 km (71 mi) ENE of here earthquakes near Santa Barbara County
Kings County, CA 138 km (86 mi) SE of here earthquakes near Kings County

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

Aftershocks so far

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

  1. 1.8 2km NE of Gorman, CA
  2. 1.9 15km NNE of Pine Mountain Club, CA
  3. 1.6 9km NW of Grapevine, CA
  4. 1.6 9km ENE of Lebec, CA
  5. 2.3 17km NE of Taft, CA
  6. 2.2 12km N of Grapevine, CA
  7. 1.8 16km ESE of Arvin, CA
  8. 1.7 25km ENE of Arvin, CA
  9. 1.7 7km SSW of Tehachapi, CA
  10. 2.1 25km NW of Grapevine, CA
  11. 1.5 18km ESE of Arvin, CA
  12. 2.1 24km NW of Grapevine, CA
  13. 1.8 25km E of Maricopa, CA
  14. 1.9 11km NNW of Grapevine, CA
  15. 1.7 12km SSE of Arvin, 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.