QuakeIndex

Earthquake · automatic estimate, may change

M 1.6ml

5km NNW of Coso Junction, CA

Yes. A magnitude 1.6 earthquake was recorded 5km NNW of Coso Junction, CA, at 4:01 pm PDT on 12 July 2019 (23:01 UTC), 15 km deep. The magnitude and location are an automatic first estimate and may change.

· 15 km deep · released about 8.7 lb of TNT

10 km30 km60 km120 km N Inyo County 73 kmTulare County 75 kmKern County 108 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 1.6 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Inyo County, 73 km NE
Nearest mapped fault
Southern Sierra Nevada fault, 3 km from its surface trace — near is not the same as on
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 2680 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. 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 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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

The largest earthquake within 50 km since 2016 was M 7.1 on 2019-07-06 — about 150,000,000 times the energy of this one.

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 · 43 km S of this epicentre
  2. 5.8 16km NNE of Ridgecrest, California · 46 km SE of this epicentre
  3. 5.4 14km NW of Inyokern, CA · 40 km S of this epicentre
  4. 5.4 4km N of Inyokern, CA · 47 km SSE of this epicentre
  5. 5.4 17km N of Ridgecrest, California · 44 km SE 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 36.0857, -117.9598. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Inyo County, CA 73 km (45 mi) NE earthquakes near Inyo County
Tulare County, CA 75 km (47 mi) WNW earthquakes near Tulare County
Kern County, CA 108 km (67 mi) SW earthquakes near Kern 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. 2.5 18km E of Little Lake, CA
  2. 1.6 19km E of Little Lake, CA
  3. 2.0 13km ESE of Olancha, CA
  4. 2.3 24km N of Ridgecrest, CA
  5. 1.6 18km E of Little Lake, CA
  6. 1.5 19km WNW of Searles Valley, CA
  7. 1.5 19km ESE of Little Lake, CA
  8. 1.7 10km E of Coso Junction, CA
  9. 1.7 21km NNE of Ridgecrest, CA
  10. 1.7 24km N of Ridgecrest, CA
  11. 1.9 15km NNE of Coso Junction, CA
  12. 1.6 18km ENE of Little Lake, CA
  13. 2.2 17km E of Little Lake, CA
  14. 2.2 17km E of Little Lake, CA
  15. 1.9 22km ESE of Little Lake, 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.