QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Pedley, CA

No earthquake was likely felt in Pedley in the 24 hours to 4:28 am PST (12:28 UTC). The last one was M 2.0, 14 km (9 mi) N, at 2:35 am PDT on 23 October 2026, estimated intensity II (weak) in town; 3 felt reports to USGS. Every earthquake near Pedley

This page: a magnitude 2.2 earthquake was recorded 3 km (2 mi) west-southwest of Pedley, CA, at 5:01 am PDT on 25 April 2019 (12:01 UTC), 8.5 km deep. 3 people have reported feeling it to USGS.

USGS: 3km WSW of Pedley, CA

6 km (4 mi) SW of Jurupa Valley, CA · 84 km (52 mi) E of Los Angeles, CA

5:01 am PDT, Apr 25, 2019 · · 8.5 km deep · released about 52 lb of TNT

Every earthquake near Pedley Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 40 kmLos Angeles County 74 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
5:01 am PDT on 25 April 2019 ()
Where
3 km (2 mi) west-southwest of Pedley, CA · earthquakes near Pedley
Magnitude
M 2.2 (ml)
Depth
8.5 km below the surface
Felt
3 reports · strongest reported intensity IV
Nearest
Orange County, 40 km SW
Nearest mapped fault
Elsinore fault, 16 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 2758 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 16 km (10 mi) from the epicentre. In Pedley, 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.

Likely felt in: Pedley 3 km, intensity II · Norco 5 km, intensity II · Eastvale 5 km, intensity II · Rubidoux 10 km, intensity II · Riverside 10 km, intensity II · Corona 11 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 52 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 290,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 52 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 2,100 times the energy of this one.

Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.2 3 km SE of San Bernardino, California · 27 km ENE of this epicentre
  2. 6.0 The 1910 Lake Elsinore, California Earthquake · 31 km SSE of this epicentre
  3. 5.5 The 1990 Upland, California Earthquake · 27 km NW of this epicentre
  4. 5.4 5km S of Chino Hills, CA · 24 km W of this epicentre
  5. 5.3 Near San Bernardino, California · 46 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 33.9598, -117.5078. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Orange County, CA 40 km (25 mi) SW earthquakes near Orange County
Los Angeles County, CA 74 km (46 mi) WNW earthquakes near Los Angeles County
San Diego County, CA 124 km (77 mi) SSE earthquakes near San Diego County

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

Aftershocks so far

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

  1. 1.8 5km NNW of Glen Avon, CA
  2. 2.1 4km NNW of Glen Avon, CA
  3. 1.8 4km NNW of Glen Avon, CA
  4. 1.5 4km NNW of Glen Avon, CA
  5. 2.0 4km NW of Glen Avon, CA
  6. 3.1 4km NNW of Glen Avon, CA
  7. 2.6 5km NNW of Glen Avon, CA
  8. 2.6 5km NNW of Glen Avon, CA
  9. 1.7 5km NNW of Glen Avon, CA
  10. 1.6 5km NNW of Glen Avon, CA
  11. 1.6 5km NNW of Glen Avon, CA
  12. 2.0 5km NNW of Glen Avon, CA
  13. 1.7 4km NNW of Glen Avon, CA
  14. 1.9 5km NNW of Glen Avon, CA
  15. 1.9 4km NNW of Glen Avon, 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.