QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Searles Valley, CA

No earthquake was likely felt in Searles Valley in the 24 hours to 12:31 pm PST (20:31 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 1.9 earthquake was recorded 35 km (22 mi) north of Searles Valley, CA, at 9:01 pm PDT on 21 September 2019 (04:01 UTC), 2.2 km deep.

USGS: 35km N of Searles Valley, CA

9:01 pm PDT, Sep 21, 2019 · · 2.2 km deep · released about 20 lb of TNT

Every earthquake near Searles Valley Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Inyo County 55 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
9:01 pm PDT on 21 September 2019 ()
Where
35 km (22 mi) north of Searles Valley, CA · earthquakes near Searles Valley
Magnitude
M 1.9 (ml)
Depth
2.2 km below the surface
Felt
no reports yet
Nearest
Inyo County, 55 km N
Nearest mapped fault
Ash Hill fault, 2 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 756 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 14 km (9 mi) from the epicentre. In Searles Valley, 35 km away, the estimate is intensity II (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.

How big was it?

This earthquake released about 20 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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 68,000,000 times the energy of this one.

Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.0 Death Valley area, California · 31 km ESE of this epicentre
  2. 5.9 Death Valley area, California · 31 km ESE of this epicentre
  3. 5.8 16km NNE of Ridgecrest, California · 44 km SW of this epicentre
  4. 5.4 17km N of Ridgecrest, California · 44 km SW of this epicentre
  5. 5.3 27km E of Coso Junction, California · 28 km W 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 36.0745, -117.3335. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Inyo County, CA 55 km (34 mi) N earthquakes near Inyo County

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

Aftershocks so far

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

  1. 1.6 14km SSW of Searles Valley, CA
  2. 2.1 24km NNE of Trona, CA
  3. 2.3 17km E of Little Lake, CA
  4. 2.2 9km ENE of Coso Junction, CA
  5. 1.8 15km WSW of Searles Valley, CA
  6. 1.8 19km NNE of Ridgecrest, CA
  7. 1.7 21km ESE of Little Lake, CA
  8. 1.8 14km W of Searles Valley, CA
  9. 2.7 22km NNW of Searles Valley, CA
  10. 1.6 22km NNE of Inyokern, CA
  11. 1.7 15km S of Searles Valley, CA
  12. 2.2 18km W of Searles Valley, CA
  13. 1.5 21km WNW of Searles Valley, CA
  14. 1.6 15km NNW of Searles Valley, CA
  15. 2.4 19km 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.