Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Malibu, CA
No earthquake was likely felt in Malibu in the 24 hours to 9:27 am PST (17:27 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 1.7 earthquake was recorded 15 km (9 mi) west-northwest of Malibu, CA, at 7:09 pm PST on 17 February 2023 (03:09 UTC), 3.3 km deep.
USGS: 13km WNW of Malibu, CA
48 km (30 mi) W of Los Angeles, CA · 15 km (10 mi) SSW of Thousand Oaks, CA
- When
- 7:09 pm PST on 17 February 2023 ()
- Where
- 15 km (9 mi) west-northwest of Malibu, CA · earthquakes near Malibu
- Magnitude
- M 1.7 (ml)
- Depth
- 3.3 km below the surface
- Felt
- no reports yet
- Nearest
- Ventura County, 38 km NNW
- 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 1362 days ago
Earthquake alerts for Malibu, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 12 km (7 mi) from the epicentre. In Malibu, 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, Westlake Village, Agoura Hills, Camarillo, Agoura, Oak Park.
How big was it?
This earthquake released about 11 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.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 970,000× the energy of this one
- Around the size people start to feel M 3.0 86× the energy of this one
- This earthquake M 1.7 about 11 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 5,200 times the energy of this one.
Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 Northridge, California, earthquake · 40 km ENE of this epicentre
- 5.9 1km ENE of Granada Hills, California · 47 km ENE of this epicentre
- 5.6 7km NNE of Simi Valley, California · 36 km NE of this epicentre
- 5.3 2 km SSW of Santa Monica, California · 40 km E of this epicentre
- 5.3 The 1973 Point Mugu, California Earthquake · 14 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 34.0635, -118.9315. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Ventura County, CA | 38 km (23 mi) | NNW | earthquakes near Ventura County |
| Los Angeles County, CA | 63 km (39 mi) | ENE | earthquakes near Los Angeles County |
| Santa Barbara County, CA | 114 km (71 mi) | WNW | earthquakes near Santa Barbara County |
| Orange County, CA | 115 km (71 mi) | ESE | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
44 earthquakes have been recorded within 50 km since this one.
- 2.1 3 km NNE of Granada Hills, CA
- 2.7 27 km SSW of Port Hueneme, CA
- 1.6 6km NNE of Chatsworth, CA
- 2.0 18km W of Malibu, CA
- 1.5 1km SSW of Century City, CA
- 1.6 10km WSW of Ventura, CA
- 1.6 8km N of Chatsworth, CA
- 2.6 17km SE of Santa Cruz Is. (E end), CA
- 1.8 31km NE of Santa Barbara Is., CA
- 2.0 18km SSW of Malibu, CA
- 3.7 21km SSW of Malibu, CA
- 1.7 26km S of Malibu, CA
- 2.0 13km WNW of Malibu, CA
- 1.8 10km WSW of Malibu, CA
- 1.5 6km ESE of Moorpark, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.