QuakeIndex

quarry blast · reviewed by a seismologist

M 1.6ml

Earthquake near Home Gardens, CA

No earthquake was likely felt in Home Gardens in the 24 hours to 5:51 am PST (13:51 UTC). The last one was M 1.6, 7 km (4 mi) SSE, at 1:57 pm PST on 6 November 2026, estimated intensity II (weak) in town. Every earthquake near Home Gardens

No: USGS classifies this as a quarry blast, not an earthquake. A magnitude 1.6 quarry blast was recorded in Home Gardens, CA, at 1:32 pm PDT on 14 June 2019 (20:32 UTC), less than 1 km deep. 1 person has reported feeling it to USGS.

USGS: 2km ESE of Home Gardens, CA

6 km (4 mi) E of Corona, CA · 85 km (53 mi) E of Los Angeles, CA

1:32 pm PDT, Jun 14, 2019 · · -0.7 km deep · released about 7.1 lb of TNT

Every earthquake near Home Gardens Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 34 kmLos Angeles County 79 kmSan Diego County 116 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
1:32 pm PDT on 14 June 2019 ()
Where
in Home Gardens, CA · earthquakes near Home Gardens
Magnitude
M 1.6 (ml)
Depth
-0.7 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Orange County, 34 km SW
Nearest mapped fault
Elsinore fault, 8 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 2708 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 11 km (7 mi) from the epicentre. 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: Corona 6 km, intensity II · Norco 8 km, intensity II. Estimated for each town centre; each link is that town's own record.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 7.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.1 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 16,000 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 · 33 km NE of this epicentre
  2. 6.0 The 1910 Lake Elsinore, California Earthquake · 21 km SSE of this epicentre
  3. 5.5 The 1990 Upland, California Earthquake · 35 km NNW of this epicentre
  4. 5.4 5km S of Chino Hills, CA · 26 km WNW of this epicentre
  5. 5.2 8km ENE of Trabuco Canyon, CA · 19 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 33.8722, -117.5017. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Orange County, CA 34 km (21 mi) SW earthquakes near Orange County
Los Angeles County, CA 79 km (49 mi) WNW earthquakes near Los Angeles County
San Diego County, CA 116 km (72 mi) SE earthquakes near San Diego 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.

  1. 2.1 3km NW of Glen Avon, CA
  2. 2.0 6km SSW of Lytle Creek, CA
  3. 1.6 7km NW of Glen Avon, CA
  4. 1.9 7km NW of Glen Avon, CA
  5. 1.8 3km ENE of Colton, CA
  6. 1.5 7km NW of Glen Avon, CA
  7. 1.8 5km NNW of Glen Avon, CA
  8. 1.6 2km E of La Habra, CA
  9. 2.5 6km NNE of San Bernardino, CA
  10. 1.9 6km SW of Fontana, CA
  11. 2.6 7km NNW of Fontana, CA
  12. 2.8 5km SE of Loma Linda, CA
  13. 1.6 6km SW of Fontana, CA
  14. 1.7 5km SE of Home Gardens, CA
  15. 1.5 8km ENE of North Tustin, 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.