QuakeIndex

Earthquake · reviewed by a seismologist

M 1.3ml

Earthquake near Salton City, CA

USGS: 6 km SW of Salton City, CA

56 km (35 mi) SSE of Indio, CA · 116 km (72 mi) ENE of San Diego, CA

6:16 pm PDT, Sep 29, 2026 · · 2.9 km deep · released about 3 lb of TNT

10 km30 km60 km120 km N Riverside County 52 kmImperial County 66 kmSan Diego County 76 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
6:16 pm PDT on 29 September 2026 ()
Where
6 km (4 mi) SW of Salton City, CA · earthquakes near Salton City
Magnitude
M 1.3 (ml)
Depth
2.9 km below the surface
Felt
no reports yet
Nearest
Riverside County, 52 km N
Nearest mapped fault
San Jacinto fault, 5 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 3 days ago

A magnitude 1.3 earthquake was recorded 6 km (4 mi) SW of Salton City, CA, at 6:16 pm PDT on 29 September 2026 (01:16 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Desert Shores, Oasis.

How big was it?

This earthquake released about 3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 5,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 3,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 320× the energy of this one
  4. This earthquake M 1.3 about 3 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 5.3 on 2021-06-05 — about 760,000 times the energy of this one.

Before 2016, the USGS record lists 23 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.6 The 1942 Fish Creek Mountains, California Earthquake · 39 km SSE of this epicentre
  2. 6.6 The 1968 Borrego Mountain, California Earthquake · 13 km SW of this epicentre
  3. 6.6 The 1987 Superstition Hills, California Earthquake · 32 km SSE of this epicentre
  4. 6.4 The 1954 San Jacinto Fault, California Earthquake · 7 km WNW of this epicentre
  5. 6.2 The 1987 Elmore Ranch, California Earthquake · 28 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 33.2653, -116.0118. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Riverside County, CA 52 km (32 mi) N earthquakes near Riverside County
Imperial County, CA 66 km (41 mi) ESE earthquakes near Imperial County
San Diego County, CA 76 km (47 mi) WSW earthquakes near San Diego County

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

Aftershocks so far

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

  1. 0.8 21 km ESE of Anza, CA
  2. 1.1 11 km WNW of Calipatria, CA
  3. 0.9 22 km ESE of Anza, CA
  4. 0.7 22 km ESE of Anza, CA
  5. 0.6 21 km ESE of Anza, CA
  6. 0.6 22 km ESE of Anza, CA
  7. 2.0 22 km ESE of Anza, CA
  8. 1.0 11 km SSW of Borrego Springs, CA
  9. 0.7 24 km NE of Pine Valley, CA
  10. 1.1 11 km SSW of Borrego Springs, CA
  11. 0.7 22 km ESE of Anza, CA
  12. 1.0 22 km ESE of Anza, CA
  13. 1.7 25 km ESE of Ocotillo Wells, CA
  14. 1.1 10 km NNW of Ocotillo Wells, CA
  15. 0.9 21 km ESE 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.

Revisions

USGS refines a solution as more stations report. Every change we have seen is listed here.

What changedFromToWhen
review statusautomaticreviewed
longitude-116.01-116.01
latitude33.2733.27
depth2.522.93
location6 km WSW of Salton City, CA6 km SW of Salton City, CA
longitude-116.01-116.01
latitude33.2733.27
depth1.72.52
magnitude1.31.33

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.