QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Escondido, CA

No earthquake was likely felt in Escondido in the 24 hours to 10:45 am PST (18:45 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 1.7 earthquake was recorded 30 km (18 mi) east-northeast of Escondido, CA, at 9:28 pm PST on 5 March 2026 (05:28 UTC), 9.0 km deep.

USGS: 4 km W of Lake Henshaw, CA

57 km (35 mi) NNE of San Diego, CA · 28 km (17 mi) ENE of Escondido, CA

9:28 pm PST, Mar 5, 2026 · · 9.0 km deep · released about 9.6 lb of TNT

10 km30 km60 km120 km N San Diego County 25 kmRiverside County 92 kmOrange County 102 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
9:28 pm PST on 5 March 2026 ()
Where
30 km (18 mi) east-northeast of Escondido, CA · earthquakes near Escondido
Magnitude
M 1.7 (ml)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
San Diego County, 25 km S
Nearest mapped fault
Elsinore 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 251 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 8 km (5 mi) from the epicentre. In Escondido, 30 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: Valley Center, Aguanga, Ramona, Julian, San Diego Country Estates, Hidden Meadows.

How big was it?

This earthquake released about 9.6 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 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 200,000 times the energy of this one.

Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 5.5 1km ENE of Borrego Springs, CA · 42 km E of this epicentre
  2. 5.4 20km NNW of Borrego Springs, CA · 36 km ENE of this epicentre
  3. 5.3 18km ESE of Anza, CA · 38 km NE of this epicentre
  4. 5.2 10km ESE of Anza, CA · 39 km NE of this epicentre
  5. 5.0 16 km NW of Julian, California · 11 km ESE 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 33.2462, -116.8077. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Diego County, CA 25 km (15 mi) S earthquakes near San Diego County
Riverside County, CA 92 km (57 mi) NE earthquakes near Riverside County
Orange County, CA 102 km (63 mi) WNW earthquakes near Orange County

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

Aftershocks so far

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

  1. 1.9 21 km NNW of Borrego Springs, CA
  2. 2.3 8 km SE of Winchester, CA
  3. 1.6 16 km ESE of Anza, CA
  4. 2.5 3 km WSW of Lake Henshaw, CA
  5. 2.1 15 km NNE of Borrego Springs, CA
  6. 1.5 16 km ESE of Anza, CA
  7. 1.6 11 km S of Idyllwild, CA
  8. 1.8 18 km ESE of Julian, CA
  9. 2.1 8 km NE of Julian, CA
  10. 1.5 14 km S of Anza, CA
  11. 1.6 14 km ENE of Julian, CA
  12. 2.1 13 km ENE of Julian, CA
  13. 1.6 17 km E of Julian, CA
  14. 1.9 14 km NE of Julian, CA
  15. 1.7 21 km SSW of La Quinta, 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.