QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Ridgecrest, CA

Yes: an earthquake was likely felt in Ridgecrest in the last 24 hours. M 1.5, 7 km (4 mi) E of Ridgecrest, at 3:54 am PST on 12 November 2026 (11:54 UTC); the estimated shaking in Ridgecrest was intensity II (weak). Every earthquake near Ridgecrest

This page: a magnitude 1.7 earthquake was recorded 47 km (29 mi) north of Ridgecrest, CA, at 9:20 pm PST on 6 December 2016 (05:20 UTC), 1.8 km deep.

USGS: 16km E of Coso Junction, CA

9:20 pm PST, Dec 6, 2016 · · 1.8 km deep · released about 9.6 lb of TNT

10 km30 km60 km120 km N Inyo County 67 kmTulare County 93 kmKern County 116 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
9:20 pm PST on 6 December 2016 ()
Where
47 km (29 mi) north of Ridgecrest, CA · earthquakes near Ridgecrest
Magnitude
M 1.7 (ml)
Depth
1.8 km below the surface
Felt
no reports yet
Nearest
Inyo County, 67 km NNE
Nearest mapped fault
Southern Sierra Nevada fault, 18 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3564 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 12 km (7 mi) from the epicentre. In Ridgecrest, 47 km away, the estimate is intensity I (not felt). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 18 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.3 The 1946 Walker Pass, California Earthquake · 41 km SSW of this epicentre
  2. 5.8 16km NNE of Ridgecrest, California · 33 km SSE of this epicentre
  3. 5.4 14km NW of Inyokern, CA · 38 km SSW of this epicentre
  4. 5.4 4km N of Inyokern, CA · 41 km S of this epicentre
  5. 5.4 17km N of Ridgecrest, California · 31 km SSE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 36.0405, -117.7718. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Inyo County, CA 67 km (41 mi) NNE earthquakes near Inyo County
Tulare County, CA 93 km (58 mi) WNW earthquakes near Tulare County
Kern County, CA 116 km (72 mi) SW 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. 2.0 23 km S of Olancha, California
  2. 1.6 12km N of Searles Valley, CA
  3. 2.6 16km NE of Coso Junction, CA
  4. 1.9 31km ENE of Little Lake, CA
  5. 1.5 30km ENE of Little Lake, CA
  6. 1.6 31km ENE of Little Lake, CA
  7. 2.9 31km ENE of Little Lake, CA
  8. 1.7 21km WNW of Inyokern, CA
  9. 2.4 21km WNW of Inyokern, CA
  10. 1.6 21km WNW of Inyokern, CA
  11. 2.2 21km WNW of Inyokern, CA
  12. 2.2 21km WNW of Inyokern, CA
  13. 2.0 17km NW of Inyokern, CA
  14. 1.7 17km NW of Inyokern, CA
  15. 1.9 7km ENE of Coso Junction, 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.