QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

7km NNW of Granada Hills, CA

· 5.1 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 29 kmVentura County 54 kmOrange County 101 kmKern 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 1.8 (ml)
Depth
5.1 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 29 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3421 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 34.3255, -118.5420. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 29 km (18 mi) WNW of here earthquakes near Los Angeles County
Ventura County, CA 54 km (34 mi) E of here earthquakes near Ventura County
Orange County, CA 101 km (63 mi) NW of here earthquakes near Orange County
Kern County, CA 115 km (71 mi) S of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 1.6 4km S of Hollywood, CA
  2. 1.7 3km NW of Castaic, CA
  3. 3.4 3km NW of Castaic, CA
  4. 1.8 0km WNW of View Park-Windsor Hills, CA
  5. 2.0 1km SSW of Sherman Oaks, CA
  6. 2.0 6km NE of Altadena, CA
  7. 1.7 0km SSE of View Park-Windsor Hills, CA
  8. 1.6 21km N of Fillmore, CA
  9. 1.7 0km SE of Century City, CA
  10. 1.6 6km ESE of Agoura Hills, CA
  11. 1.9 7km WSW of Santa Clarita, CA
  12. 1.7 4km SSE of Encino, CA
  13. 1.9 9km WNW of Lake Hughes, CA
  14. 2.1 4km NNE of Granada Hills, CA
  15. 1.5 9km WNW of Lake Hughes, 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.