QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near San Diego Country Estates, CA

No earthquake was likely felt in San Diego Country Estates in the 24 hours to 10:16 pm PST (06:16 UTC). The last one was M 4.9, 163 km (101 mi) ESE, at 10:27 am PST on 3 November 2026, estimated intensity II (weak) in town; 321 felt reports to USGS. Every earthquake near San Diego Country Estates

This page: a magnitude 1.7 earthquake was recorded 9 km (6 mi) east of San Diego Country Estates, CA, at 9:23 pm PDT on 14 June 2021 (04:23 UTC), 8.6 km deep.

USGS: 9km E of San Diego Country Estates, CA

48 km (30 mi) ENE of San Diego, CA · 33 km (21 mi) ENE of Santee, CA

9:23 pm PDT, Jun 14, 2021 · · 8.6 km deep · released about 12 lb of TNT

Every earthquake near San Diego Country Estates Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 9 kmRiverside County 101 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
9:23 pm PDT on 14 June 2021 ()
Where
9 km (6 mi) east of San Diego Country Estates, CA · earthquakes near San Diego Country Estates
Magnitude
M 1.7 (ml)
Depth
8.6 km below the surface
Felt
no reports yet
Nearest
San Diego County, 9 km W
Nearest mapped fault
Elsinore fault, 14 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 1977 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 9 km (6 mi) from the epicentre. In San Diego Country Estates, 9 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.

Likely felt in: San Diego Country Estates 9 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 12 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

  1. 5.5 1km ENE of Borrego Springs, CA · 40 km NE of this epicentre
  2. 5.4 20km NNW of Borrego Springs, CA · 49 km NNE of this epicentre
  3. 5.0 16 km NW of Julian, California · 20 km N of this epicentre
  4. 5.0 26km NE of Pine Valley, CA · 35 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 33.0167, -116.6840. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Diego County, CA 9 km (5 mi) W earthquakes near San Diego County
Riverside County, CA 101 km (63 mi) NE earthquakes near Riverside County
Orange County, CA 125 km (78 mi) NW earthquakes near Orange County

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

Aftershocks so far

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

  1. 2.0 10km E of Pala, CA
  2. 2.0 10km W of Palomar Observatory, CA
  3. 1.6 11km NE of Julian, CA
  4. 1.5 8km NNW of Borrego Springs, CA
  5. 1.6 6km NNW of Lakeside, CA
  6. 1.6 24km SSW of Ocotillo Wells, CA
  7. 1.6 6km NE of Rancho San Diego, CA
  8. 1.8 3km ESE of Julian, CA
  9. 2.2 26km ENE of Pine Valley, CA
  10. 2.2 26km ENE of Pine Valley, CA
  11. 1.8 8km NNE of Borrego Springs, CA
  12. 1.6 6km NNW of Lakeside, CA
  13. 2.6 10km S of Borrego Springs, CA
  14. 2.0 27km SSW of Ocotillo Wells, CA
  15. 1.5 11km NW of Julian, 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.