QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Escondido, CA

No earthquake was likely felt in Escondido in the 24 hours to 6:56 am PST (14:56 UTC). The last one was M 3.6, 51 km (32 mi) NE, at 12:31 am PDT on 19 August 2026, estimated intensity II (weak) in town; 165 felt reports to USGS. Every earthquake near Escondido

This page: a magnitude 2.5 earthquake was recorded 47 km (29 mi) east-northeast of Escondido, CA, at 7:22 pm PDT on 20 September 2025 (02:22 UTC), 18 km deep. 7 people have reported feeling it to USGS.

USGS: 3 km SE of Warner Springs, CA

70 km (43 mi) NE of San Diego, CA · 45 km (28 mi) ENE of Escondido, CA

7:22 pm PDT, Sep 20, 2025 · · 18 km deep · released about 160 lb of TNT

10 km30 km60 km120 km N San Diego County 31 kmRiverside County 77 kmOrange County 117 kmImperial County 120 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
7:22 pm PDT on 20 September 2025 ()
Where
47 km (29 mi) east-northeast of Escondido, CA · earthquakes near Escondido
Magnitude
M 2.5 (ml)
Depth
18 km below the surface
Felt
7 reports · strongest reported intensity III
Nearest
San Diego County, 31 km SSW
Nearest mapped fault
Elsinore 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 341 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 Escondido, 47 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: Julian, Borrego Springs.

How big was it?

This earthquake released about 160 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 92,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 65,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.8× the energy of this one
  4. This earthquake M 2.5 about 160 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 2025-04-14 — about 12,000 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.6 The 1968 Borrego Mountain, California Earthquake · 48 km E of this epicentre
  2. 6.4 The 1954 San Jacinto Fault, California Earthquake · 49 km E of this epicentre
  3. 6.0 16km WSW of Oasis, CA · 37 km ENE of this epicentre
  4. 5.7 Eastern San Diego County, California · 48 km E of this epicentre
  5. 5.5 8km NNE of Ocotillo Wells, CA · 48 km E 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 33.2633, -116.6118. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Diego County, CA 31 km (19 mi) SSW earthquakes near San Diego County
Riverside County, CA 77 km (48 mi) NE earthquakes near Riverside County
Orange County, CA 117 km (73 mi) WNW earthquakes near Orange County
Imperial County, CA 120 km (74 mi) ESE earthquakes near Imperial County

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

Aftershocks so far

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

  1. 1.6 24 km ESE of Anza, CA
  2. 2.1 23 km NNW of Borrego Springs, CA
  3. 2.4 22 km NNW of Borrego Springs, CA
  4. 1.9 23 km ESE of Anza, CA
  5. 3.0 23 km NNW of Borrego Springs, CA
  6. 1.8 23 km NNW of Borrego Springs, CA
  7. 1.6 21 km ESE of Anza, CA
  8. 2.5 23 km ESE of Anza, CA
  9. 1.9 14 km N of Warner Springs, CA
  10. 1.6 1 km E of Anza, CA
  11. 1.8 14 km N of Warner Springs, CA
  12. 2.1 24 km NNW of Borrego Springs, CA
  13. 1.5 20 km SW of Ocotillo Wells, CA
  14. 2.0 9 km NNW of Anza, CA
  15. 1.9 2 km ENE of Palomar Observatory, 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.