QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Vincent, CA

No earthquake was likely felt in Vincent in the 24 hours to 11:00 pm PST (07:00 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 1.8 earthquake was recorded 3 km (2 mi) southeast of Vincent, CA, at 7:30 am PDT on 22 September 2018 (14:30 UTC), 13 km deep.

USGS: 3km SE of Vincent, CA

12 km (8 mi) S of Palmdale, CA · 59 km (37 mi) NNE of Los Angeles, CA

7:30 am PDT, Sep 22, 2018 · · 13 km deep · released about 15 lb of TNT

10 km30 km60 km120 km N Los Angeles County 35 kmOrange County 94 kmVentura County 97 kmKern County 113 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
7:30 am PDT on 22 September 2018 ()
Where
3 km (2 mi) southeast of Vincent, CA · earthquakes near Vincent
Magnitude
M 1.8 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 35 km SSW
Nearest mapped fault
San Andreas fault, 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 2942 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 3 km (2 mi) from the epicentre. In Vincent, 3 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: Acton, Littlerock, Palmdale, Desert View Highlands, Sun Village, Quartz Hill.

How big was it?

This earthquake released about 15 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.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 4.4 on 2018-08-29 — about 7,700 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.6 1971 San Fernando Earthquake, California · 27 km WSW of this epicentre
  2. 5.9 The 1987 Whittier Narrows, California Earthquake · 47 km S of this epicentre
  3. 5.9 1km ENE of Granada Hills, California · 44 km WSW of this epicentre
  4. 5.8 10km SSW of Agua Dulce, CA · 27 km WSW of this epicentre
  5. 5.8 10km SSW of Agua Dulce, CA · 27 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 34.4815, -118.0885. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Los Angeles County, CA 35 km (22 mi) SSW earthquakes near Los Angeles County
Orange County, CA 94 km (58 mi) SSE earthquakes near Orange County
Ventura County, CA 97 km (60 mi) W earthquakes near Ventura County
Kern County, CA 113 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

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

  1. 1.9 1km N of Caltech, Pasadena, CA
  2. 1.6 2km NNW of Valinda, CA
  3. 1.9 2km SSW of La Canada Flintridge, CA
  4. 2.0 10km S of Agua Dulce, CA
  5. 2.0 3km ESE of Northridge, CA
  6. 2.7 3km ESE of Northridge, CA
  7. 2.1 6km SW of Valencia, CA
  8. 1.7 4km SE of San Fernando, CA
  9. 1.5 6km N of Pacoima, CA
  10. 2.9 7km SSW of Littlerock, CA
  11. 2.2 8km SW of Lake Hughes, CA
  12. 2.8 2km ESE of Pacoima, CA
  13. 1.6 2km ESE of Northridge, CA
  14. 2.1 4km NNE of Granada Hills, CA
  15. 1.9 3km ENE 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.