QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

15km WNW of Pine Mountain Club, CA

· 8.6 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 63 kmKern County 71 kmSanta Barbara County 80 kmSan Luis Obispo County 118 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
8.6 km below the surface
Felt
no reports yet
Nearest
Ventura County, 63 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2985 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 13 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 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 34.9073, -119.2922. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ventura County, CA 63 km (39 mi) NNW of here earthquakes near Ventura County
Kern County, CA 71 km (44 mi) SW of here earthquakes near Kern County
Santa Barbara County, CA 80 km (50 mi) ENE of here earthquakes near Santa Barbara County
San Luis Obispo County, CA 118 km (73 mi) ESE of here earthquakes near San Luis Obispo County
Los Angeles County, CA 123 km (76 mi) NW of here earthquakes near Los Angeles County

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

Aftershocks so far

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

  1. 1.9 18km S of Frazier Park, CA
  2. 2.6 16km NW of Grapevine, CA
  3. 1.7 16km NW of Pine Mountain Club, CA
  4. 2.2 16km NW of Pine Mountain Club, CA
  5. 2.2 3km NW of Frazier Park, CA
  6. 1.7 14km NE of Ojai, CA
  7. 2.3 15km NE of Ojai, CA
  8. 1.7 16km NE of Ojai, CA
  9. 2.2 16km NW of Pine Mountain Club, CA
  10. 2.0 11km WNW of Ojai, CA
  11. 1.8 20km SSW of Frazier Park, CA
  12. 1.5 10km SE of Maricopa, CA
  13. 2.1 22km N of Ojai, CA
  14. 1.6 7km S of Lamont, CA
  15. 1.7 12km WNW of Pine Mountain Club, 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 4.1 on 2016-03-12 — it released about 3,600 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.