QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

18km NW of Grapevine, CA

· 18 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kern County 47 kmVentura County 76 kmSanta Barbara County 103 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 (ml)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Kern County, 47 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3380 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 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 35.0422, -119.0898. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kern County, CA 47 km (29 mi) SW of here earthquakes near Kern County
Ventura County, CA 76 km (47 mi) N of here earthquakes near Ventura County
Santa Barbara County, CA 103 km (64 mi) ENE of here earthquakes near Santa Barbara County
Los Angeles County, CA 121 km (75 mi) NW of here earthquakes near Los Angeles County
Kings County, CA 132 km (82 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

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

  1. 2.2 17km NNW of Grapevine, CA
  2. 1.5 14km NW of Grapevine, CA
  3. 2.0 15km NW of Grapevine, CA
  4. 1.9 15km NW of Grapevine, CA
  5. 3.8 15km NW of Grapevine, CA
  6. 1.6 3km NW of Frazier Park, CA
  7. 1.8 10km E of Taft, CA
  8. 1.5 4km S of Frazier Park, CA
  9. 1.6 4km S of Frazier Park, CA
  10. 1.9 3km NNW of Frazier Park, CA
  11. 1.7 15km SE of Buttonwillow, CA
  12. 1.7 3km SSE of Frazier Park, CA
  13. 1.5 5km WNW of Frazier Park, CA
  14. 1.9 15km N of Pine Mountain Club, CA
  15. 1.9 15km SE of Maricopa, 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.