QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Oasis, CA

No earthquake was likely felt in Oasis in the 24 hours to 3:57 pm PST (23:57 UTC). The last one was M 4.9, 144 km (89 mi) SE, at 10:27 am PST on 3 November 2026, estimated intensity II (weak) in town; 321 felt reports to USGS. Every earthquake near Oasis

This page: a magnitude 1.7 earthquake was recorded 18 km (11 mi) south-southwest of Oasis, CA, at 5:54 pm PDT on 3 October 2023 (00:54 UTC), 11 km deep.

USGS: 18 km SSW of Oasis, CA

45 km (28 mi) S of Indio, CA · 105 km (65 mi) ENE of San Diego, CA

5:54 pm PDT, Oct 3, 2023 · · 11 km deep · released about 10 lb of TNT

Every earthquake near Oasis Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 48 kmSan Diego County 64 kmImperial County 84 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
5:54 pm PDT on 3 October 2023 ()
Where
18 km (11 mi) south-southwest of Oasis, CA · earthquakes near Oasis
Magnitude
M 1.7 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Riverside County, 48 km NNE
Nearest mapped fault
San Jacinto fault, 1 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 1135 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 5 km (3 mi) from the epicentre. In Oasis, 18 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.

Earthquakes near other towns within 30 km: Desert Shores, Borrego Springs, Salton City, Mecca.

How big was it?

This earthquake released about 10 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 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× the energy of this one
  4. This earthquake M 1.7 about 10 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 5.2 on 2016-06-10 — about 180,000 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. 6.6 The 1968 Borrego Mountain, California Earthquake · 18 km SSE of this epicentre
  2. 6.6 The 1987 Superstition Hills, California Earthquake · 47 km SE of this epicentre
  3. 6.4 The 1954 San Jacinto Fault, California Earthquake · 11 km ESE of this epicentre
  4. 6.2 The 1987 Elmore Ranch, California Earthquake · 46 km SE of this epicentre
  5. 6.0 16km WSW of Oasis, CA · 10 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 33.3273, -116.1920. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Riverside County, CA 48 km (30 mi) NNE earthquakes near Riverside County
San Diego County, CA 64 km (40 mi) WSW earthquakes near San Diego County
Imperial County, CA 84 km (52 mi) ESE earthquakes near Imperial County

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

Aftershocks so far

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

  1. 1.7 23 km NE of Pine Valley, CA
  2. 3.2 15 km ENE of Borrego Springs, CA
  3. 1.6 17 km S of Salton City, CA
  4. 2.0 6 km W of Borrego Springs, CA
  5. 2.2 26 km SSW of Ocotillo Wells, CA
  6. 2.5 26 km SSW of Ocotillo Wells, CA
  7. 1.6 10 km NNE of Ocotillo Wells, CA
  8. 1.5 12 km E of Ocotillo Wells, CA
  9. 1.8 17 km S of Salton City, CA
  10. 1.5 17 km S of Salton City, CA
  11. 1.7 22 km ESE of Anza, CA
  12. 1.7 7 km N of Borrego Springs, CA
  13. 1.7 7 km W of Borrego Springs, CA
  14. 1.6 11 km ENE of Borrego Springs, CA
  15. 1.6 13 km SSE of Anza, 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.