QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

Earthquake near Malibu, CA

No earthquake was likely felt in Malibu in the 24 hours to 4:11 am PST (12:11 UTC). The last one was M 2.3, 8 km (5 mi) W, at 4:53 am PDT on 16 October 2026, estimated intensity II (weak) in town; 2 felt reports to USGS. Every earthquake near Malibu

This page: a magnitude 2.8 earthquake was recorded 4 km (3 mi) northwest of Malibu, CA, at 9:15 am PDT on 12 September 2024 (16:15 UTC), 11 km deep. 15 people have reported feeling it to USGS.

USGS: 6 km N of Malibu, CA

37 km (23 mi) W of Los Angeles, CA · 17 km (10 mi) SSE of Thousand Oaks, CA

9:15 am PDT, Sep 12, 2024 · · 11 km deep · released about 450 lb of TNT

10 km30 km60 km120 km N Ventura County 45 kmLos Angeles County 52 kmOrange County 104 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
9:15 am PDT on 12 September 2024 ()
Where
4 km (3 mi) northwest of Malibu, CA · earthquakes near Malibu
Magnitude
M 2.8 (ml)
Depth
11 km below the surface
Felt
15 reports · strongest reported intensity IV
Nearest
Ventura County, 45 km NW
Nearest mapped fault
Malibu Coast 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 721 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 24 km (15 mi) from the epicentre. In Malibu, 4 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: Agoura 11 km, intensity II · Thousand Oaks 13 km, intensity II · Simi Valley 24 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 450 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 34,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 24,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.1× the energy of this one
  4. This earthquake M 2.8 about 450 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

The largest earthquake within 50 km since 2016 was M 4.7 on 2024-09-12 — about 790 times the energy of this one.

Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 Northridge, California, earthquake · 30 km NE of this epicentre
  2. 5.9 1km ENE of Granada Hills, California · 38 km NE of this epicentre
  3. 5.6 7km NNE of Simi Valley, California · 32 km NNE of this epicentre
  4. 5.3 2 km SSW of Santa Monica, California · 29 km ESE of this epicentre
  5. 5.3 The 1973 Point Mugu, California Earthquake · 24 km WSW 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 34.0562, -118.8055. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Ventura County, CA 45 km (28 mi) NW earthquakes near Ventura County
Los Angeles County, CA 52 km (33 mi) ENE earthquakes near Los Angeles County
Orange County, CA 104 km (65 mi) ESE earthquakes near Orange County
Santa Barbara County, CA 125 km (78 mi) WNW earthquakes near Santa Barbara County

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

Aftershocks so far

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

  1. 1.8 4 km NE of View Park-Windsor Hills, CA
  2. 2.6 6 km N of Malibu, CA
  3. 2.1 9 km NW of Santa Paula, CA
  4. 1.7 4 km N of Malibu, CA
  5. 1.8 5 km E of Inglewood, CA
  6. 2.1 17 km S of Port Hueneme, CA
  7. 1.6 6 km W of Chatsworth, CA
  8. 2.1 15 km SSE of Malibu, CA
  9. 2.4 5 km N of Malibu, CA
  10. 1.6 3 km SSW of Baldwin Hills, CA
  11. 2.1 6 km N of Malibu, CA
  12. 2.8 7 km N of Malibu, CA
  13. 2.4 32 km SE of Santa Cruz Is. (E end), CA
  14. 2.3 32 km SE of Santa Cruz Is. (E end), CA
  15. 3.1 9 km WSW 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.