QuakeIndex

Earthquake · reviewed by a seismologist

M 4.5mlr

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 4.5 earthquake was recorded 10 km (6 mi) east-northeast of Ridgecrest, CA, at 10:35 am PDT on 4 July 2019 (17:35 UTC), 4.6 km deep. 29 people have reported feeling it to USGS.

USGS: 10km ENE of Ridgecrest, CA

10:35 am PDT, Jul 4, 2019 · · 4.6 km deep · released about 82 tons of TNT

Every earthquake near Ridgecrest Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Inyo County 103 kmKern County 110 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
10:35 am PDT on 4 July 2019 ()
Where
10 km (6 mi) east-northeast of Ridgecrest, CA · earthquakes near Ridgecrest
Magnitude
M 4.5 (mlr)
Depth
4.6 km below the surface
Felt
29 reports · strongest reported intensity V
Measured shaking
intensity VI (ShakeMap)
USGS impact alert
green
Nearest
Inyo County, 103 km N
Nearest mapped fault
Little Lake fault, 11 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 1608 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

At this magnitude and depth, people at rest would likely notice it out to about 138 km (86 mi) from the epicentre. In Ridgecrest, 10 km away, the estimate is intensity IV (light). 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: Ridgecrest 10 km, intensity IV · Searles Valley 20 km, intensity IV. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 82 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 2,100× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 92× the energy of this one
  3. Magna, Utah 2020 M 5.7 65× the energy of this one
  4. This earthquake M 4.5 about 82 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 170× 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 6.4 on 2019-07-04 — about 730 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 · 14 km NNW of this epicentre
  3. 5.4 14km NW of Inyokern, CA · 35 km WNW of this epicentre
  4. 5.4 4km N of Inyokern, CA · 23 km W of this epicentre
  5. 5.4 17km N of Ridgecrest, California · 17 km NNW 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 35.6440, -117.5672. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Inyo County, CA 103 km (64 mi) N earthquakes near Inyo County
Kern County, CA 110 km (69 mi) WSW earthquakes near Kern County
Tulare County, CA 127 km (79 mi) WNW earthquakes near Tulare County

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

Aftershocks so far

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

  1. 2.4 9km SW of Searles Valley, CA
  2. 2.2 14km W of Searles Valley, CA
  3. 2.6 15km ENE of Ridgecrest, CA
  4. 2.5 9km E of Ridgecrest, CA
  5. 2.5 10km ENE of Ridgecrest, CA
  6. 2.2 12km E of Ridgecrest, CA
  7. 2.2 12km ENE of Ridgecrest, CA
  8. 2.1 11km SW of Searles Valley, CA
  9. 2.9 12km WSW of Searles Valley, CA
  10. 2.4 14km WSW of Searles Valley, CA
  11. 3.5 15km ENE of Ridgecrest, CA
  12. 2.8 13km SW of Searles Valley, CA
  13. 2.7 12km WSW of Searles Valley, CA
  14. 2.4 7km ENE of Ridgecrest, CA
  15. 2.4 12km WSW 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.