QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

Earthquake near Searles Valley, CA

No earthquake was likely felt in Searles Valley in the 24 hours to 3:43 pm PST (23:43 UTC). The last one was M 2.7, 21 km (13 mi) N, at 11:15 am PST on 4 November 2026, estimated intensity II (weak) in town. Every earthquake near Searles Valley

This page: a magnitude 3.1 earthquake was recorded 14 km (9 mi) west of Searles Valley, CA, at 6:54 am PDT on 29 September 2019 (13:54 UTC), 8.2 km deep. 7 people have reported feeling it to USGS.

USGS: 14km W of Searles Valley, CA

6:54 am PDT, Sep 29, 2019 · · 8.2 km deep · released about 1,200 lb of TNT

10 km30 km60 km120 km N Inyo County 92 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
6:54 am PDT on 29 September 2019 ()
Where
14 km (9 mi) west of Searles Valley, CA · earthquakes near Searles Valley
Magnitude
M 3.1 (ml)
Depth
8.2 km below the surface
Felt
7 reports · strongest reported intensity III
Nearest
Inyo County, 92 km N
Nearest mapped fault
Airport Lake fault, 16 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 1858 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 39 km (24 mi) from the epicentre. In Searles Valley, 14 km away, the estimate is intensity III (weak). 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.

Likely felt in: Searles Valley 14 km, intensity III · Ridgecrest 17 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 290,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 13,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,100× the energy of this one
  4. This earthquake M 3.1 about 1,200 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.2× more

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 1,100,000 times the energy of this one.

Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.3 The 1946 Walker Pass, California Earthquake · 35 km W of this epicentre
  2. 5.8 16km NNE of Ridgecrest, California · 8 km WNW of this epicentre
  3. 5.4 14km NW of Inyokern, CA · 35 km W of this epicentre
  4. 5.4 4km N of Inyokern, CA · 25 km WSW of this epicentre
  5. 5.4 17km N of Ridgecrest, California · 10 km WNW 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 35.7463, -117.5548. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Inyo County, CA 92 km (57 mi) N earthquakes near Inyo County
Kern County, CA 115 km (72 mi) WSW earthquakes near Kern County
Tulare County, CA 123 km (76 mi) WNW earthquakes near Tulare County

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

Aftershocks so far

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

  1. 1.7 23km ESE of Little Lake, CA
  2. 1.7 19km ESE of Little Lake, CA
  3. 1.5 21 km E of Little Lake, CA
  4. 1.7 21 km ESE of Little Lake, CA
  5. 1.6 10km SSW of Searles Valley, CA
  6. 2.3 15 km SSW of Searles Valley, CA
  7. 1.8 12km WSW of Searles Valley, CA
  8. 1.5 10km ENE of Coso Junction, CA
  9. 1.6 12km NE of Coso Junction, CA
  10. 1.6 14 km ENE of Ridgecrest, CA
  11. 1.6 11 km ENE of Ridgecrest, CA
  12. 2.6 12km NE of Coso Junction, CA
  13. 1.9 16km SSW of Searles Valley, CA
  14. 1.7 12km SW of Searles Valley, CA
  15. 1.7 15km W of Searles Valley, 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.