Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Los Angeles, CA
No earthquake was likely felt in Los Angeles in the 24 hours to 8:47 pm PST (04:47 UTC). The last one was M 3.2, 30 km (19 mi) S, at 12:44 am PDT on 9 October 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near Los Angeles
This page: a magnitude 1.7 earthquake was recorded 34 km (21 mi) northwest of Los Angeles, CA, at 11:18 pm PDT on 16 March 2018 (06:18 UTC), 8.8 km deep.
USGS: 4km WNW of San Fernando, CA
14 km (9 mi) S of Santa Clarita, CA · 31 km (19 mi) N of Los Angeles, CA
- When
- 11:18 pm PDT on 16 March 2018 ()
- Where
- 34 km (21 mi) northwest of Los Angeles, CA · earthquakes near Los Angeles
- Magnitude
- M 1.7 (ml)
- Depth
- 8.8 km below the surface
- Felt
- no reports yet
- Nearest
- Los Angeles County, 22 km ESE
- Nearest mapped fault
- Northridge blind thrust, 5 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 3031 days ago
Earthquake alerts for Los Angeles, CA
Get a notification in this browser when USGS records an earthquake near Los Angeles, CA. No account or email needed.
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 9 km (6 mi) from the epicentre. In Los Angeles, 34 km away, the estimate is intensity I (not felt). 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: Santa Clarita, Stevenson Ranch, Burbank, Valencia, Hidden Hills, La Crescenta-Montrose.
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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 22 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 Northridge, California, earthquake · 11 km SSW of this epicentre
- 6.6 1971 San Fernando Earthquake, California · 17 km NE of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 45 km SE of this epicentre
- 5.9 1km ENE of Granada Hills, California · 3 km SW of this epicentre
- 5.8 10km SSW of Agua Dulce, CA · 17 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 34.2945, -118.4735. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Los Angeles County, CA | 22 km (14 mi) | ESE | earthquakes near Los Angeles County |
| Ventura County, CA | 61 km (38 mi) | W | earthquakes near Ventura County |
| Orange County, CA | 94 km (58 mi) | SE | earthquakes near Orange County |
| Kern County, CA | 119 km (74 mi) | N | earthquakes near Kern County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
48 earthquakes have been recorded within 50 km since this one.
- 1.7 9km S of Quartz Hill, CA
- 1.9 6km S of Littlerock, CA
- 1.8 1km W of Manhattan Beach, CA
- 2.4 1km WSW of Manhattan Beach, CA
- 1.9 4km SE of Piru, CA
- 1.6 6km S of Littlerock, CA
- 1.6 1km ENE of Lennox, CA
- 1.9 3km SE of Piru, CA
- 1.9 2km NE of Simi Valley, CA
- 1.7 4km WNW of Chatsworth, CA
- 1.6 0km ENE of Universal City, CA
- 1.6 12km SW of Marina del Rey, CA
- 1.7 11km SW of Westlake Village, CA
- 1.9 3km NE of Chatsworth, CA
- 2.0 4km SSW of Baldwin Hills, 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.