QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near El Segundo, CA

No earthquake was likely felt in El Segundo in the 24 hours to 1:25 am PST (09:25 UTC). The last one was M 3.2, 26 km (16 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 El Segundo

This page: a magnitude 2.3 earthquake was recorded 5 km (3 mi) west of El Segundo, CA, at 3:36 am PDT on 13 July 2017 (10:36 UTC), 13 km deep. 15 people have reported feeling it to USGS.

USGS: 5km W of El Segundo, CA

13 km (8 mi) SSW of Los Angeles, CA · 10 km (6 mi) NW of Redondo Beach, CA

3:36 am PDT, Jul 13, 2017 · · 13 km deep · released about 77 lb of TNT

Every earthquake near El Segundo Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 37 kmOrange County 70 kmVentura County 78 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
3:36 am PDT on 13 July 2017 ()
Where
5 km (3 mi) west of El Segundo, CA · earthquakes near El Segundo
Magnitude
M 2.3 (ml)
Depth
13 km below the surface
Felt
15 reports · strongest reported intensity III
Nearest
Los Angeles County, 37 km NNE
Nearest mapped fault
Palos Verdes fault, 3 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 3304 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 El Segundo, 5 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: Manhattan Beach 7 km, intensity II · Redondo Beach 11 km, intensity II · Hawthorne 11 km, intensity II · Lawndale 12 km, intensity II · Santa Monica 12 km, intensity II · Inglewood 12 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 77 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 14 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 Northridge, California, earthquake · 34 km N of this epicentre
  2. 5.9 The 1987 Whittier Narrows, California Earthquake · 40 km ENE of this epicentre
  3. 5.9 1km ENE of Granada Hills, California · 40 km N of this epicentre
  4. 5.3 2 km SSW of Santa Monica, California · 10 km NNW of this epicentre
  5. 5.2 1 km SW of Las Flores, California · 20 km NW 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 33.9160, -118.4723. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Los Angeles County, CA 37 km (23 mi) NNE earthquakes near Los Angeles County
Orange County, CA 70 km (43 mi) ESE earthquakes near Orange County
Ventura County, CA 78 km (49 mi) NW earthquakes near Ventura County

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

Aftershocks so far

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

  1. 1.7 7km WSW of Malibu, CA
  2. 1.6 4km WNW of La Mirada, CA
  3. 1.6 3km S of South Whittier, CA
  4. 1.8 21km S of Malibu, CA
  5. 1.8 9km S of Seal Beach, CA
  6. 1.7 12km SSW of Rancho Palos Verdes, CA
  7. 2.1 5km ESE of San Pedro, CA
  8. 2.3 4km WSW of Malibu Beach, CA
  9. 1.9 33km S of Malibu, CA
  10. 3.1 6km W of Topanga, CA
  11. 1.7 1km W of Woodland Hills, CA
  12. 1.8 13km SE of Malibu, CA
  13. 1.9 3km NNW of Beverly Hills, CA
  14. 2.5 4km SE of Malibu, CA
  15. 2.5 6km SSE of Malibu, 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.