QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

12km WSW of Lake Hughes, CA

· 9.5 km deep · released about 16 lb of TNT

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10 km30 km60 km120 km N Los Angeles County 57 kmVentura County 60 kmKern County 80 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
9.5 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 57 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1798 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 16 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 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 34.6420, -118.5708. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 57 km (35 mi) NNW of here earthquakes near Los Angeles County
Ventura County, CA 60 km (38 mi) ENE of here earthquakes near Ventura County
Kern County, CA 80 km (50 mi) S of here earthquakes near Kern County
Orange County, CA 130 km (81 mi) NW of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 2.6 1km ENE of San Fernando, CA
  2. 1.7 12km NNW of Piru, CA
  3. 1.9 17km N of Piru, CA
  4. 2.2 11km NNE of Lake View Terrace, CA
  5. 1.6 15km N of Piru, CA
  6. 1.6 4km SSE of Piru, CA
  7. 2.0 8km SE of Piru, CA
  8. 2.0 11km N of Piru, CA
  9. 1.9 11km N of Piru, CA
  10. 2.4 11km N of Piru, CA
  11. 3.2 10km SW of Valencia, CA
  12. 2.0 11km NNW of Piru, CA
  13. 1.6 9km SE of Piru, CA
  14. 2.3 8km SE of Piru, CA
  15. 2.3 3km SSE of Frazier Park, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2020-07-30 — it released about 3,300 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.