QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Santa Monica, CA

No earthquake was likely felt in Santa Monica in the 24 hours to 12:07 pm PST (20:07 UTC). The last one was M 3.2, 38 km (24 mi) SE, at 12:44 am PDT on 9 October 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near Santa Monica

This page: a magnitude 2.2 earthquake was recorded 4 km (2 mi) north-northwest of Santa Monica, CA, at 6:00 am PDT on 27 July 2020 (13:00 UTC), 6.0 km deep. 93 people have reported feeling it to USGS.

USGS: 4km NNW of Santa Monica, CA

9 km (6 mi) WNW of Los Angeles, CA · in Santa Monica, CA

6:00 am PDT, Jul 27, 2020 · · 6.0 km deep · released about 56 lb of TNT

10 km30 km60 km120 km N Los Angeles County 28 kmVentura County 67 kmOrange County 79 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
6:00 am PDT on 27 July 2020 ()
Where
4 km (2 mi) north-northwest of Santa Monica, CA · earthquakes near Santa Monica
Magnitude
M 2.2 (ml)
Depth
6.0 km below the surface
Felt
93 reports · strongest reported intensity IV
Nearest
Los Angeles County, 28 km NE
Nearest mapped fault
Santa Monica 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 1731 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 17 km (11 mi) from the epicentre. In Santa Monica, 4 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: Santa Monica 4 km, intensity II · Inglewood 17 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 23 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 Northridge, California, earthquake · 18 km N of this epicentre
  2. 6.6 1971 San Fernando Earthquake, California · 43 km NNE of this epicentre
  3. 5.9 The 1987 Whittier Narrows, California Earthquake · 39 km E of this epicentre
  4. 5.9 1km ENE of Granada Hills, California · 25 km N of this epicentre
  5. 5.8 10km SSW of Agua Dulce, CA · 43 km NNE 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 34.0488, -118.5060. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Los Angeles County, CA 28 km (17 mi) NE earthquakes near Los Angeles County
Ventura County, CA 67 km (42 mi) WNW earthquakes near Ventura County
Orange County, CA 79 km (49 mi) ESE earthquakes near Orange 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 8km SSE of Malibu, CA
  2. 1.6 1km SSW of Sylmar, CA
  3. 1.5 16km WNW of Malibu, CA
  4. 2.4 5km WSW of Hermosa Beach, CA
  5. 2.5 2km ESE of Granada Hills, CA
  6. 1.6 4km W of South El Monte, CA
  7. 1.5 3km SW of La Mirada, CA
  8. 1.9 1km S of Malibu, CA
  9. 2.3 3km WSW of South El Monte, CA
  10. 1.6 3km W of South El Monte, CA
  11. 1.8 3km W of South El Monte, CA
  12. 1.6 3km W of South El Monte, CA
  13. 2.1 3km WSW of South El Monte, CA
  14. 1.6 3km WSW of South El Monte, CA
  15. 1.9 4km W of South El Monte, 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.