Earthquake · reviewed by a seismologist
M 1.8ml
Earthquake near Topanga, CA
No earthquake was likely felt in Topanga in the 24 hours to 12:30 pm PST (20:30 UTC). The last one was M 2.3, 18 km (11 mi) N, at 9:45 am PST on 7 November 2026, estimated intensity II (weak) in town; 26 felt reports to USGS. Every earthquake near Topanga
This page: a magnitude 1.8 earthquake was recorded 4 km (2 mi) north-northwest of Topanga, CA, at 12:22 am PDT on 24 March 2022 (07:22 UTC), 4.8 km deep. 10 people have reported feeling it to USGS.
USGS: 4km N of Topanga, CA
22 km (14 mi) WNW of Los Angeles, CA · 17 km (10 mi) NW of Santa Monica, CA
- When
- 12:22 am PDT on 24 March 2022 ()
- Where
- 4 km (2 mi) north-northwest of Topanga, CA · earthquakes near Topanga
- Magnitude
- M 1.8 (ml)
- Depth
- 4.8 km below the surface
- Felt
- 10 reports · strongest reported intensity III
- Nearest
- Los Angeles County, 33 km ENE
- Nearest mapped fault
- Santa Monica fault, 10 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 1690 days ago
Earthquake alerts for Topanga, 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 Topanga, 4 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 12 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 14 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.
- Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 760,000× the energy of this one
- Around the size people start to feel M 3.0 68× the energy of this one
- This earthquake M 1.8 about 14 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 4.5 on 2020-09-19 — about 14,000 times the energy of this one.
Before 2016, the USGS record lists 24 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 Northridge, California, earthquake · 12 km NE of this epicentre
- 6.6 1971 San Fernando Earthquake, California · 39 km NE of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 50 km E of this epicentre
- 5.9 1km ENE of Granada Hills, California · 20 km NNE of this epicentre
- 5.8 10km SSW of Agua Dulce, CA · 39 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 34.1268, -118.6117. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Los Angeles County, CA | 33 km (21 mi) | ENE | earthquakes near Los Angeles County |
| Ventura County, CA | 54 km (34 mi) | WNW | earthquakes near Ventura County |
| Orange County, CA | 92 km (57 mi) | ESE | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
46 earthquakes have been recorded within 50 km since this one.
- 2.4 13km W of Palos Verdes Estates, CA
- 2.3 12km WSW of Manhattan Beach, CA
- 2.2 12km WSW of Manhattan Beach, CA
- 2.3 1km S of View Park-Windsor Hills, CA
- 2.0 11km SW of Marina del Rey, CA
- 1.5 1km NNE of Maywood, CA
- 1.7 2km E of Carson, CA
- 1.9 17km W of Malibu, CA
- 1.6 2km SSE of Granada Hills, CA
- 1.8 4km ESE of Gardena, CA
- 1.5 2km SSW of Culver City, CA
- 1.8 2km SSW of Culver City, CA
- 1.8 6km WSW of Valencia, CA
- 1.9 6km WSW of Valencia, CA
- 2.5 2km N of Manhattan Beach, 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.