Earthquake · reviewed by a seismologist
M 2.3ml
Earthquake near Malibu, CA
No earthquake was likely felt in Malibu in the 24 hours to 7:20 am PST (15:20 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 2.3 earthquake was recorded 21 km (13 mi) southwest of Malibu, CA, at 12:27 am PST on 20 February 2017 (08:27 UTC), 1.9 km deep.
USGS: 17km SW of Malibu, CA
51 km (32 mi) WSW of Los Angeles, CA · 33 km (21 mi) SSW of Thousand Oaks, CA
- When
- 12:27 am PST on 20 February 2017 ()
- Where
- 21 km (13 mi) southwest of Malibu, CA · earthquakes near Malibu
- Magnitude
- M 2.3 (ml)
- Depth
- 1.9 km below the surface
- Felt
- no reports yet
- Nearest
- Ventura County, 53 km NNW
- Nearest mapped fault
- Dume fault, 6 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 3467 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 20 km (12 mi) from the epicentre. In Malibu, 21 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.
How big was it?
This earthquake released about 88 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 170,000× the energy of this one
- Magna, Utah 2020 M 5.7 120,000× the energy of this one
- Around the size people start to feel M 3.0 11× the energy of this one
- This earthquake M 2.3 about 88 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 7 earthquakes of M5 or more within 50 km; the five largest:
- 5.5 11km NNW of Santa Barbara Is., CA · 42 km SSW of this epicentre
- 5.3 2 km SSW of Santa Monica, California · 43 km ENE of this epicentre
- 5.3 The 1973 Point Mugu, California Earthquake · 13 km NW of this epicentre
- 5.2 9 km SW of Channel Islands Beach, California · 39 km NW of this epicentre
- 5.2 1 km SW of Las Flores, California · 32 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 33.9027, -118.9485. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Ventura County, CA | 53 km (33 mi) | NNW | earthquakes near Ventura County |
| Los Angeles County, CA | 71 km (44 mi) | ENE | earthquakes near Los Angeles County |
| Orange County, CA | 111 km (69 mi) | ESE | earthquakes near Orange County |
| Santa Barbara County, CA | 123 km (76 mi) | NW | earthquakes near Santa Barbara County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
35 earthquakes have been recorded within 50 km since this one.
- 1.9 6km N of Moorpark, CA
- 2.5 4km SE of Malibu, CA
- 2.5 6km SSE of Malibu, CA
- 1.9 12km SSE of Malibu Beach, CA
- 1.9 17km S of Malibu Beach, CA
- 1.6 3km SE of Malibu Beach, CA
- 2.4 38km NNW of Santa Barbara Is., CA
- 1.6 10km SSW of Malibu, CA
- 2.3 5km SW of Port Hueneme, CA
- 1.9 5km NW of Westwood, CA
- 3.6 5km NW of Westwood, CA
- 2.0 17km SSE of Malibu, CA
- 1.7 15km SW of Rancho Palos Verdes, CA
- 1.5 6km SSE of Malibu, CA
- 1.8 17km SSE of Malibu, 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.