QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Agoura Hills, CA

No earthquake was likely felt in Agoura Hills in the 24 hours to 12:18 pm PST (20:18 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 Agoura Hills

This page: a magnitude 1.8 earthquake was recorded 5 km (3 mi) southeast of Agoura Hills, CA, at 9:42 am PDT on 2 August 2019 (16:42 UTC), 11 km deep. 1 person has reported feeling it to USGS.

USGS: 5km SE of Agoura Hills, CA

31 km (19 mi) WNW of Los Angeles, CA · 16 km (10 mi) SE of Thousand Oaks, CA

9:42 am PDT, Aug 2, 2019 · · 11 km deep · released about 15 lb of TNT

Every earthquake near Agoura Hills Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 45 kmVentura County 46 kmOrange County 100 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
9:42 am PDT on 2 August 2019 ()
Where
5 km (3 mi) southeast of Agoura Hills, CA · earthquakes near Agoura Hills
Magnitude
M 1.8 (ml)
Depth
11 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Los Angeles County, 45 km ENE
Nearest mapped fault
Malibu Coast fault, 7 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 2659 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 8 km (5 mi) from the epicentre. In Agoura Hills, 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: Agoura 5 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 19 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 Northridge, California, earthquake · 22 km NE of this epicentre
  2. 6.6 1971 San Fernando Earthquake, California · 49 km NE of this epicentre
  3. 5.9 1km ENE of Granada Hills, California · 30 km NE of this epicentre
  4. 5.8 10km SSW of Agua Dulce, CA · 49 km NE of this epicentre
  5. 5.8 10km SSW of Agua Dulce, CA · 49 km NE 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 34.0987, -118.7377. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Los Angeles County, CA 45 km (28 mi) ENE earthquakes near Los Angeles County
Ventura County, CA 46 km (29 mi) NW earthquakes near Ventura County
Orange County, CA 100 km (62 mi) ESE earthquakes near Orange County
Santa Barbara County, CA 129 km (80 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

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

  1. 1.8 5km W of Malibu, CA
  2. 1.6 3km N of Pacoima, CA
  3. 2.0 4km WSW of El Segundo, CA
  4. 2.0 7km E of Topanga, CA
  5. 1.9 5km NE of Pacoima, CA
  6. 1.6 6km NNE of Santa Paula, CA
  7. 1.6 4km WNW of El Segundo, CA
  8. 2.0 3km E of Hawthorne, CA
  9. 1.6 2km SSW of San Fernando, CA
  10. 2.3 2km SW of San Fernando, CA
  11. 1.7 11km W of Palos Verdes Estates, CA
  12. 2.4 12km S of Las Flores, CA
  13. 1.9 9km NW of Santa Paula, CA
  14. 1.5 5km SSW of Baldwin Hills, CA
  15. 2.0 7km E of Topanga, 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.