QuakeIndex

Earthquake · reviewed by a seismologist

M 4.0mw

Earthquake near Escondido, CA

No earthquake was likely felt in Escondido in the 24 hours to 4:50 am PST (12:50 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 4.0 earthquake was recorded 29 km (18 mi) north-northeast of Escondido, CA, at 9:46 am PST on 30 January 2022 (17:46 UTC), 13 km deep. 5,794 people have reported feeling it to USGS.

USGS: 5km WSW of Palomar Observatory, CA

61 km (38 mi) NNE of San Diego, CA · 27 km (17 mi) SE of Temecula, CA

9:46 am PST, Jan 30, 2022 · · 13 km deep · released about 15 tons of TNT

10 km30 km60 km120 km N San Diego County 37 kmOrange County 88 kmRiverside County 95 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
9:46 am PST on 30 January 2022 ()
Where
29 km (18 mi) north-northeast of Escondido, CA · earthquakes near Escondido
Magnitude
M 4.0 (mw)
Depth
13 km below the surface
Felt
5,794 reports · strongest reported intensity V
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Nearest
San Diego County, 37 km SSE
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 1354 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

At this magnitude and depth, people at rest would likely notice it out to about 96 km (60 mi) from the epicentre. In Escondido, 29 km away, the estimate is intensity III (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: Aguanga 13 km, intensity III · Temecula 28 km, intensity III · Escondido 29 km, intensity III · Ramona 33 km, intensity III · Anza 33 km, intensity III · Murrieta 37 km, intensity III · San Diego Country Estates 39 km, intensity III · Julian 41 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 15 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 11,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 500× the energy of this one
  3. Magna, Utah 2020 M 5.7 350× the energy of this one
  4. This earthquake M 4.0 about 15 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 32× more

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 61 times the energy of this one.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 The 1918 San Jacinto, California Earthquake · 48 km N of this epicentre
  2. 5.4 20km NNW of Borrego Springs, CA · 42 km ENE of this epicentre
  3. 5.3 6km SSE of Hemet, CA · 41 km N of this epicentre
  4. 5.3 18km ESE of Anza, CA · 41 km ENE of this epicentre
  5. 5.2 10km ESE of Anza, CA · 39 km NE 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 33.3355, -116.9147. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Diego County, CA 37 km (23 mi) SSE earthquakes near San Diego County
Orange County, CA 88 km (55 mi) WNW earthquakes near Orange County
Riverside County, CA 95 km (59 mi) ENE earthquakes near Riverside County

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

Aftershocks so far

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

  1. 1.8 3km NNW of Palomar Observatory, CA
  2. 2.0 10km S of Idyllwild, CA
  3. 1.9 16km ESE of Anza, CA
  4. 1.8 14km N of Warner Springs, CA
  5. 1.7 4km WNW of Camp Pendleton South, CA
  6. 2.4 14km NE of Julian, CA
  7. 1.6 14km N of Warner Springs, CA
  8. 2.0 3km NNW of Palomar Observatory, CA
  9. 1.9 13km WNW of Anza, CA
  10. 1.6 17km ESE of Anza, CA
  11. 1.5 22km ESE of Anza, CA
  12. 1.7 6km NNW of Lakeside, CA
  13. 1.7 13km ESE of Anza, CA
  14. 1.8 13km WNW of Anza, CA
  15. 2.4 13km SE 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.