QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Oak Park, CA

No earthquake was likely felt in Oak Park in the 24 hours to 1:22 pm PST (21:22 UTC). The last one was M 2.3, 17 km (11 mi) ENE, at 9:45 am PST on 7 November 2026, estimated intensity II (weak) in town; 26 felt reports to USGS. Every earthquake near Oak Park

This page: a magnitude 1.9 earthquake was recorded 5 km (3 mi) north-northwest of Oak Park, CA, at 11:02 am PDT on 30 July 2016 (18:02 UTC), 14 km deep.

USGS: 5km NNW of Oak Park, CA

6 km (4 mi) SW of Simi Valley, CA · 41 km (26 mi) WNW of Los Angeles, CA

11:02 am PDT, Jul 30, 2016 · · 14 km deep · released about 21 lb of TNT

Every earthquake near Oak Park Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 35 kmLos Angeles County 49 kmOrange County 111 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
11:02 am PDT on 30 July 2016 ()
Where
5 km (3 mi) north-northwest of Oak Park, CA · earthquakes near Oak Park
Magnitude
M 1.9 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Ventura County, 35 km WNW
Nearest mapped fault
Simi-Santa Rosa fault, 14 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 3755 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 4 km (2 mi) from the epicentre. In Oak Park, 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.

Earthquakes near other towns within 30 km: Simi Valley, Thousand Oaks, Westlake Village, Agoura Hills, Agoura, Moorpark.

How big was it?

This earthquake released about 21 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 5.8 730,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 520,000× the energy of this one
  3. Around the size people start to feel M 3.0 46× the energy of this one
  4. This earthquake M 1.9 about 21 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 4.1 on 2016-03-12 — about 2,300 times the energy of this one.

Before 2016, the USGS record lists 20 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 Northridge, California, earthquake · 23 km E of this epicentre
  2. 6.6 1971 San Fernando Earthquake, California · 44 km ENE of this epicentre
  3. 5.9 1km ENE of Granada Hills, California · 28 km ENE of this epicentre
  4. 5.8 10km SSW of Agua Dulce, CA · 44 km ENE of this epicentre
  5. 5.8 10km SSW of Agua Dulce, CA · 44 km ENE 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 34.2195, -118.7893. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Ventura County, CA 35 km (22 mi) WNW earthquakes near Ventura County
Los Angeles County, CA 49 km (30 mi) E earthquakes near Los Angeles County
Orange County, CA 111 km (69 mi) ESE earthquakes near Orange County
Santa Barbara County, CA 120 km (75 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

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

  1. 2.1 7km WSW of Santa Monica, CA
  2. 2.2 5km NW of Malibu Beach, CA
  3. 1.9 19km S of Malibu Beach, CA
  4. 2.0 2km N of Castaic, CA
  5. 2.0 17km ESE of Port Hueneme, CA
  6. 2.6 7km NNE of Lake View Terrace, CA
  7. 2.2 11km N of Piru, CA
  8. 2.0 3km WSW of Panorama City, CA
  9. 2.3 14km SSE of Malibu Beach, CA
  10. 1.8 4km NW of Beverly Hills, CA
  11. 1.8 10km NW of Malibu, CA
  12. 2.3 1km S of Sherman Oaks, CA
  13. 1.6 2km SW of View Park-Windsor Hills, CA
  14. 2.4 14km N of Santa Paula, CA
  15. 1.8 14km N of Santa Paula, 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.