Earthquake · reviewed by a seismologist
M 3.1ml
Earthquake near Willowbrook, CA
No earthquake was likely felt in Willowbrook in the 24 hours to 11:35 pm PST (07:35 UTC). The last one was M 1.8, 4 km (2 mi) SW, at 2:31 pm PDT on 31 October 2026, estimated intensity II (weak) in town. Every earthquake near Willowbrook
This page: a magnitude 3.1 earthquake was recorded 5 km (3 mi) west-northwest of Willowbrook, CA, at 1:25 am PST on 10 November 2017 (09:25 UTC), 12 km deep. 1,372 people have reported feeling it to USGS.
USGS: 5km WNW of Willowbrook, CA
14 km (9 mi) SE of Los Angeles, CA · in Gardena, CA
- When
- 1:25 am PST on 10 November 2017 ()
- Where
- 5 km (3 mi) west-northwest of Willowbrook, CA · earthquakes near Willowbrook
- Magnitude
- M 3.1 (ml)
- Depth
- 12 km below the surface
- Felt
- 1,372 reports · strongest reported intensity IV
- Measured shaking
- intensity V (ShakeMap)
- Nearest
- Los Angeles County, 30 km N
- Nearest mapped fault
- Newport-Inglewood-Rose Canyon 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 3207 days ago
Earthquake alerts for Willowbrook, 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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 41 km (25 mi) from the epicentre. In Willowbrook, 5 km away, the estimate is intensity III (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: Westmont in town, intensity III · Willowbrook 5 km, intensity III · Gardena 5 km, intensity III · Hawthorne 5 km, intensity III · Inglewood 6 km, intensity III · Florence-Graham 7 km, intensity III · Lawndale 7 km, intensity III · Lynwood 8 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1,400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 230,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
- Magna, Utah 2020 M 5.7 7,400× the energy of this one
- This earthquake M 3.1 about 1,400 lb of TNT
- Around the size people start to feel M 3.0 this one released 1.5× more
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 18 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 Northridge, California, earthquake · 38 km NW of this epicentre
- 6.4 The 1933 Long Beach, California Earthquake · 44 km SE of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 25 km NE of this epicentre
- 5.9 1km ENE of Granada Hills, California · 42 km NNW of this epicentre
- 5.8 The 1991 Sierra Madre, California Earthquake · 47 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 33.9313, -118.3020. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Los Angeles County, CA | 30 km (18 mi) | N | earthquakes near Los Angeles County |
| Orange County, CA | 56 km (35 mi) | ESE | earthquakes near Orange County |
| Ventura County, CA | 90 km (56 mi) | WNW | earthquakes near Ventura County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 2.2 1km NNE of Hermosa Beach, CA
- 2.2 17km SSE of Malibu, CA
- 1.7 8km S of Malibu Beach, CA
- 1.9 4km WSW of Compton, CA
- 2.0 4km NNE of Brea, CA
- 1.8 2km NE of Silver Lake, CA
- 1.7 4km SW of Paramount, CA
- 1.7 18km SSE of Malibu, CA
- 1.5 6km NNE of Granada Hills, CA
- 2.5 3km N of Carson, CA
- 1.7 12km S of Malibu Beach, CA
- 1.5 2km WSW of East Los Angeles, CA
- 1.8 6km NW of Signal Hill, CA
- 1.9 20km S of San Pedro, CA
- 1.7 3km WSW of Culver City, 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.