QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Apple Valley, CA

No earthquake was likely felt in Apple Valley in the 24 hours to 7:30 am PST (15:30 UTC). The last one was M 4.3, 107 km (66 mi) NNW, at 9:40 am PDT on 13 July 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near Apple Valley

This page: a magnitude 1.7 earthquake was recorded 50 km (31 mi) east-northeast of Apple Valley, CA, at 7:05 pm PDT on 30 April 2018 (02:05 UTC), 4.1 km deep.

USGS: 35km NE of Lucerne Valley, CA

51 km (32 mi) ENE of Apple Valley, CA · 102 km (63 mi) NE of Riverside, CA

7:05 pm PDT, Apr 30, 2018 · · 4.1 km deep · released about 12 lb of TNT

Every earthquake near Apple Valley Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 51 kmRiverside County 118 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
7:05 pm PDT on 30 April 2018 ()
Where
50 km (31 mi) east-northeast of Apple Valley, CA · earthquakes near Apple Valley
Magnitude
M 1.7 (ml)
Depth
4.1 km below the surface
Felt
no reports yet
Nearest
San Bernardino County, 51 km ENE
Nearest mapped fault
Camp Rock-Emerson-Copper Mountain fault, under 1 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 3031 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 12 km (7 mi) from the epicentre. In Apple Valley, 50 km away, the estimate is intensity I (not felt). 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.

How big was it?

This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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 4.3 on 2016-02-20 — about 7,400 times the energy of this one.

Before 2016, the USGS record lists 18 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.1 The 1999 Hector Mine, California Earthquake · 37 km E of this epicentre
  2. 6.5 The 1947 Manix, California Earthquake · 41 km NNE of this epicentre
  3. 5.8 13km WSW of Ludlow, CA · 35 km E of this epicentre
  4. 5.4 26km NNW of Yucca Valley, CA · 35 km SSE of this epicentre
  5. 5.4 21km SW of Ludlow, California · 32 km E 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 34.6332, -116.6668. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Bernardino County, CA 51 km (32 mi) ENE earthquakes near San Bernardino County
Riverside County, CA 118 km (73 mi) SSE earthquakes near Riverside County
Orange County, CA 148 km (92 mi) SW earthquakes near Orange 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. 1.9 23km SSE of Fort Irwin, CA
  2. 1.6 33km N of Yucca Valley, CA
  3. 3.0 6km E of Lucerne Valley, CA
  4. 2.4 6km E of Lucerne Valley, CA
  5. 1.7 1km SSW of Big Bear Lake, CA
  6. 1.6 17km NNE of Apple Valley, CA
  7. 1.8 24km SSW of Ludlow, CA
  8. 1.8 15km NW of Ludlow, CA
  9. 1.9 14km NW of Ludlow, CA
  10. 2.5 21km N of Yucca Valley, CA
  11. 3.2 6km NNW of Big Bear Lake, CA
  12. 1.6 35km E of Barstow, CA
  13. 1.8 26km NW of Ludlow, CA
  14. 1.6 16km NNE of Barstow, CA
  15. 2.0 14km WSW of Ludlow, 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.