QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Vincent, CA

No earthquake was likely felt in Vincent in the 24 hours to 11:40 pm PST (07:40 UTC). The last one was M 3.8, 60 km (38 mi) W, at 8:00 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 199 felt reports to USGS. Every earthquake near Vincent

This page: a magnitude 2.3 earthquake was recorded 5 km (3 mi) east of Vincent, CA, at 7:18 am PDT on 23 September 2017 (14:18 UTC), 8.9 km deep. 3 people have reported feeling it to USGS.

USGS: 5km E of Vincent, CA

11 km (7 mi) SSE of Palmdale, CA · 63 km (39 mi) NNE of Los Angeles, CA

7:18 am PDT, Sep 23, 2017 · · 8.9 km deep · released about 98 lb of TNT

10 km30 km60 km120 km N Los Angeles County 39 kmOrange County 96 kmVentura County 100 kmKern County 112 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
7:18 am PDT on 23 September 2017 ()
Where
5 km (3 mi) east of Vincent, CA · earthquakes near Vincent
Magnitude
M 2.3 (ml)
Depth
8.9 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Los Angeles County, 39 km SSW
Nearest mapped fault
San Andreas 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 3303 days ago

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 18 km (11 mi) from the epicentre. In Vincent, 5 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: Littlerock, Palmdale, Sun Village, Desert View Highlands, Acton, Quartz Hill.

How big was it?

This earthquake released about 98 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.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.6 1971 San Fernando Earthquake, California · 30 km WSW of this epicentre
  2. 5.9 The 1987 Whittier Narrows, California Earthquake · 49 km S of this epicentre
  3. 5.9 1km ENE of Granada Hills, California · 47 km WSW of this epicentre
  4. 5.8 10km SSW of Agua Dulce, CA · 30 km WSW of this epicentre
  5. 5.8 10km SSW of Agua Dulce, CA · 30 km WSW 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 34.5033, -118.0575. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Los Angeles County, CA 39 km (24 mi) SSW earthquakes near Los Angeles County
Orange County, CA 96 km (59 mi) SSE earthquakes near Orange County
Ventura County, CA 100 km (62 mi) W earthquakes near Ventura County
Kern County, CA 112 km (70 mi) NNW earthquakes near Kern County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

37 earthquakes have been recorded within 50 km since this one.

  1. 1.5 3km NE of San Dimas, CA
  2. 1.5 3km NNW of La Verne, CA
  3. 2.5 4km N of La Verne, CA
  4. 1.5 3km NNW of La Verne, CA
  5. 1.8 2km NNW of La Verne, CA
  6. 3.4 4km N of La Verne, CA
  7. 4.4 4km N of La Verne, CA
  8. 1.5 17km NNE of Glendora, CA
  9. 1.5 17km NNE of Glendora, CA
  10. 1.6 0km ENE of Universal City, CA
  11. 1.9 9km WSW of Wrightwood, CA
  12. 1.5 3km NE of Vincent, CA
  13. 1.6 3km N of Pacoima, CA
  14. 1.7 3km E of Granada Hills, CA
  15. 1.5 5km NNE of Granada 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.