QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Westlake Village, CA

No earthquake was likely felt in Westlake Village in the 24 hours to 2:43 am PST (10:43 UTC). The last one was M 2.3, 16 km (10 mi) SSW, at 4:53 am PDT on 16 October 2026, estimated intensity II (weak) in town; 2 felt reports to USGS. Every earthquake near Westlake Village

This page: a magnitude 1.9 earthquake was recorded 8 km (5 mi) southwest of Westlake Village, CA, at 1:20 am PST on 4 February 2025 (09:20 UTC), 14 km deep.

USGS: 8 km SW of Westlake Village, CA

12 km (7 mi) S of Thousand Oaks, CA · 42 km (26 mi) W of Los Angeles, CA

1:20 am PST, Feb 4, 2025 · · 14 km deep · released about 19 lb of TNT

Every earthquake near Westlake Village Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 39 kmLos Angeles County 56 kmOrange County 110 kmSanta Barbara County 120 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
1:20 am PST on 4 February 2025 ()
Where
8 km (5 mi) southwest of Westlake Village, CA · earthquakes near Westlake Village
Magnitude
M 1.9 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Ventura County, 39 km NW
Nearest mapped fault
Malibu Coast fault, 5 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 647 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 3 km (2 mi) from the epicentre. In Westlake Village, 8 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.

Earthquakes near other towns within 30 km: Agoura Hills, Thousand Oaks, Malibu, Agoura, Oak Park, Hidden Hills.

How big was it?

This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 810,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 580,000× the energy of this one
  3. Around the size people start to feel M 3.0 51× the energy of this one
  4. This earthquake M 1.9 about 19 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 5.1 on 2023-08-20 — about 68,000 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 · 32 km ENE of this epicentre
  2. 5.9 1km ENE of Granada Hills, California · 39 km ENE of this epicentre
  3. 5.6 7km NNE of Simi Valley, California · 30 km NNE of this epicentre
  4. 5.3 2 km SSW of Santa Monica, California · 34 km ESE of this epicentre
  5. 5.3 The 1973 Point Mugu, California Earthquake · 22 km SW 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 34.0878, -118.8558. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Ventura County, CA 39 km (25 mi) NW earthquakes near Ventura County
Los Angeles County, CA 56 km (35 mi) ENE earthquakes near Los Angeles County
Orange County, CA 110 km (68 mi) ESE earthquakes near Orange County
Santa Barbara County, CA 120 km (74 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

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

  1. 2.0 25 km S of Malibu, CA
  2. 1.9 26 km SSE of Malibu, CA
  3. 2.0 27 km S of Malibu, CA
  4. 2.0 27 km SSE of Malibu, CA
  5. 3.4 28 km SSE of Malibu, CA
  6. 3.1 27 km SSE of Malibu, CA
  7. 1.7 2 km N of Universal City, CA
  8. 1.6 2 km NNW of Universal City, CA
  9. 2.0 11 km NW of Malibu, CA
  10. 1.6 1 km NE of Sherman Oaks, CA
  11. 1.5 13 km WNW of Malibu, CA
  12. 2.0 10 km NW of Malibu, CA
  13. 1.5 11 km NW of Malibu, CA
  14. 1.6 10 km NW of Malibu, CA
  15. 2.1 1 km N of Manhattan Beach, 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.