QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near La Verne, CA

No earthquake was likely felt in La Verne in the 24 hours to 4:31 am PST (12:31 UTC). The last one was M 3.2, 19 km (12 mi) ESE, at 5:37 am PDT on 2 September 2026, estimated intensity III (weak) in town; 730 felt reports to USGS. Every earthquake near La Verne

This page: a magnitude 2.5 earthquake was recorded 13 km (8 mi) north of La Verne, CA, at 12:32 pm PDT on 30 April 2023 (19:32 UTC), 12 km deep.

USGS: 13km N of La Verne, CA

12 km (7 mi) NE of Glendora, CA · 64 km (40 mi) ENE of Los Angeles, CA

12:32 pm PDT, Apr 30, 2023 · · 12 km deep · released about 150 lb of TNT

Every earthquake near La Verne Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 47 kmOrange County 60 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
12:32 pm PDT on 30 April 2023 ()
Where
13 km (8 mi) north of La Verne, CA · earthquakes near La Verne
Magnitude
M 2.5 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 47 km W
Nearest mapped fault
San Gabriel 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 1216 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 La Verne, 13 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: La Verne 13 km, intensity II · San Dimas 13 km, intensity II · Claremont 13 km, intensity II · Glendora 14 km, intensity II · Upland 16 km, intensity II · Montclair 16 km, intensity II · Azusa 17 km, intensity II · Pomona 18 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 72,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.5× the energy of this one
  4. This earthquake M 2.5 about 150 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 1,300 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.2 3 km SE of San Bernardino, California · 48 km ESE of this epicentre
  2. 5.9 The 1987 Whittier Narrows, California Earthquake · 35 km WSW of this epicentre
  3. 5.8 The 1991 Sierra Madre, California Earthquake · 23 km WNW of this epicentre
  4. 5.5 The 1990 Upland, California Earthquake · 9 km SSE of this epicentre
  5. 5.4 5km S of Chino Hills, CA · 30 km S 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 34.2150, -117.7523. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Los Angeles County, CA 47 km (29 mi) W earthquakes near Los Angeles County
Orange County, CA 60 km (37 mi) S earthquakes near Orange County

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

Aftershocks so far

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

  1. 1.8 4km SSE of Highland Park, CA
  2. 1.7 5km ESE of Ontario, CA
  3. 1.8 6km NW of Glen Avon, CA
  4. 2.8 2km ENE of Walnut Park, CA
  5. 2.7 2km WSW of Bell, CA
  6. 2.3 3km NNE of Buena Park, CA
  7. 1.6 1km NW of Loma Linda, CA
  8. 1.6 4km SE of Home Gardens, CA
  9. 1.5 8 km SE of Wrightwood, CA
  10. 1.5 6km NE of Fontana, CA
  11. 1.5 5 km SSE of Home Gardens, CA
  12. 2.6 8km NNW of Rancho Cucamonga, CA
  13. 1.7 2km NNW of Colton, CA
  14. 1.6 10km WSW of Corona, CA
  15. 1.8 10km WSW of Corona, 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.