QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Rolling Hills Estates, CA

No earthquake was likely felt in Rolling Hills Estates in the 24 hours to 11:43 pm PST (07:43 UTC). The last one was M 3.2, 16 km (10 mi) E, at 12:44 am PDT on 9 October 2026, estimated intensity III (weak) in town; 1,090 felt reports to USGS. Every earthquake near Rolling Hills Estates

This page: a magnitude 1.8 earthquake was recorded in Rolling Hills Estates, CA, at 2:33 pm PDT on 23 June 2018 (21:33 UTC), 3.3 km deep.

USGS: 1km NNW of Rolling Hills Estates, CA

25 km (16 mi) S of Los Angeles, CA · in Torrance, CA

2:33 pm PDT, Jun 23, 2018 · · 3.3 km deep · released about 14 lb of TNT

Every earthquake near Rolling Hills Estates Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 45 kmOrange County 56 kmVentura 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
2:33 pm PDT on 23 June 2018 ()
Where
in Rolling Hills Estates, CA · earthquakes near Rolling Hills Estates
Magnitude
M 1.8 (ml)
Depth
3.3 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 45 km NNE
Nearest mapped fault
Palos Verdes fault, under 1 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 3030 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 13 km (8 mi) from the epicentre. 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: Palos Verdes Estates 3 km, intensity II · Torrance 5 km, intensity II · Rancho Palos Verdes 6 km, intensity II · Redondo Beach 6 km, intensity II · Carson 8 km, intensity II · Lawndale 10 km, intensity II · Manhattan Beach 11 km, intensity II · Gardena 11 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 · 49 km NNW of this epicentre
  2. 6.4 The 1933 Long Beach, California Earthquake · 38 km ESE of this epicentre
  3. 5.9 The 1987 Whittier Narrows, California Earthquake · 39 km NE of this epicentre
  4. 5.3 2 km SSW of Santa Monica, California · 26 km NNW of this epicentre
  5. 5.3 7km W of Newport Beach, CA · 38 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 33.7970, -118.3607. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Los Angeles County, CA 45 km (28 mi) NNE earthquakes near Los Angeles County
Orange County, CA 56 km (35 mi) ESE earthquakes near Orange County
Ventura County, CA 95 km (59 mi) NW earthquakes near Ventura County

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

Aftershocks so far

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

  1. 1.6 2km NNW of Willowbrook, CA
  2. 1.5 2km NE of Whittier, CA
  3. 1.8 1km E of Baldwin Hills, CA
  4. 1.8 2km W of El Segundo, CA
  5. 1.9 1km N of Lawndale, CA
  6. 2.0 4km SSW of La Mirada, CA
  7. 2.3 3km SW of La Mirada, CA
  8. 1.6 4km SW of Baldwin Hills, CA
  9. 2.2 4km WSW of Panorama City, CA
  10. 1.6 9km WSW of Hermosa Beach, CA
  11. 1.7 31km S of Malibu, CA
  12. 1.6 7km SE of San Pedro, CA
  13. 2.4 16km NNE of Avalon, CA
  14. 1.8 7km SE of San Pedro, CA
  15. 2.2 15km NNE of Avalon, 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.