QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

12km NNW of Grapevine, CA

· 9.9 km deep · released about 550 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kern County 42 kmVentura County 77 kmSanta Barbara County 111 kmLos Angeles 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 2.8 (ml)
Depth
9.9 km below the surface
Felt
2 reports · strongest reported intensity IV
Nearest
Kern County, 42 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1632 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 550 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 28,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.8 about 550 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 35.0398, -118.9932. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kern County, CA 42 km (26 mi) SW of here earthquakes near Kern County
Ventura County, CA 77 km (48 mi) N of here earthquakes near Ventura County
Santa Barbara County, CA 111 km (69 mi) ENE of here earthquakes near Santa Barbara County
Los Angeles County, CA 115 km (72 mi) NW of here earthquakes near Los Angeles County
Kings County, CA 137 km (85 mi) SSE of here earthquakes near Kings County

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

Aftershocks so far

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

  1. 1.5 15km SSE of Buttonwillow, CA
  2. 1.5 21km N of Neenach, CA
  3. 2.2 13km SSW of Maricopa, CA
  4. 1.8 22km N of Ojai, CA
  5. 1.8 15km SSW of Lamont, CA
  6. 1.9 15km SE of Buttonwillow, CA
  7. 1.6 11km NE of Maricopa, CA
  8. 1.7 19km N of Neenach, CA
  9. 1.6 12km NW of Grapevine, CA
  10. 2.0 20km NW of Tehachapi, CA
  11. 2.7 24km E of Maricopa, CA
  12. 1.5 3km WNW of Gorman, CA
  13. 2.2 4km NNW of Frazier Park, CA
  14. 3.1 19km SSW of Lamont, CA
  15. 1.7 21km NNW of Tehachapi, 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.