QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Camarillo, CA

No earthquake was likely felt in Camarillo in the 24 hours to 5:28 am PST (13:28 UTC). The last one was M 3.8, 32 km (20 mi) NE, at 8:00 pm PDT on 29 September 2026, estimated intensity III (weak) in town; 199 felt reports to USGS. Every earthquake near Camarillo

This page: a magnitude 1.7 earthquake was recorded 15 km (9 mi) south-southeast of Camarillo, CA, at 6:56 pm PDT on 16 April 2023 (01:56 UTC), 18 km deep.

USGS: 15km SSE of Camarillo, CA

55 km (34 mi) W of Los Angeles, CA · 15 km (9 mi) S of Camarillo, CA

6:56 pm PDT, Apr 16, 2023 · · 18 km deep · released about 12 lb of TNT

Every earthquake near Camarillo Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ventura County 32 kmLos Angeles County 69 kmSanta Barbara County 107 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
6:56 pm PDT on 16 April 2023 ()
Where
15 km (9 mi) south-southeast of Camarillo, CA · earthquakes near Camarillo
Magnitude
M 1.7 (ml)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Ventura County, 32 km NNW
Nearest mapped fault
Malibu Coast fault, 4 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 1305 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Camarillo, 15 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: Thousand Oaks, Port Hueneme, Westlake Village, Oxnard, Channel Islands Beach, Malibu.

How big was it?

This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 4.2 on 2023-01-25 — about 4,700 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 · 45 km ENE of this epicentre
  2. 5.6 7km NNE of Simi Valley, California · 39 km NE of this epicentre
  3. 5.5 30 km SW of Channel Islands Beach, California · 47 km WSW of this epicentre
  4. 5.3 2 km SSW of Santa Monica, California · 48 km ESE of this epicentre
  5. 5.3 The 1973 Point Mugu, California Earthquake · 13 km SSW 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 34.0877, -119.0053. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Ventura County, CA 32 km (20 mi) NNW earthquakes near Ventura County
Los Angeles County, CA 69 km (43 mi) E earthquakes near Los Angeles County
Santa Barbara County, CA 107 km (67 mi) WNW earthquakes near Santa Barbara County
Orange County, CA 122 km (76 mi) ESE earthquakes near Orange County

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

Aftershocks so far

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

  1. 2.6 6 km SE of Ojai, CA
  2. 1.7 6 km SE of Ojai, CA
  3. 1.6 6 km SE of Ojai, CA
  4. 1.7 6 km SE of Ojai, CA
  5. 2.0 5 km SE of Ojai, CA
  6. 1.5 5 km SE of Ojai, CA
  7. 2.2 6 km SE of Ojai, CA
  8. 1.7 6 km SE of Ojai, CA
  9. 1.6 6 km SE of Ojai, CA
  10. 1.5 5 km SSE of Ojai, CA
  11. 2.3 5 km SE of Ojai, CA
  12. 2.0 6 km SE of Ojai, CA
  13. 1.7 6 km E of Moorpark, CA
  14. 2.3 32 km W of Rancho Palos Verdes, CA
  15. 1.7 14 km SSW of Thousand Oaks, 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.