Earthquake · reviewed by a seismologist
M 2.2ml
Earthquake near Apple Valley, CA
No earthquake was likely felt in Apple Valley in the 24 hours to 3:01 am PST (11:01 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 2.2 earthquake was recorded 50 km (31 mi) east-northeast of Apple Valley, CA, at 12:38 am PST on 21 November 2017 (08:38 UTC), 5.5 km deep.
USGS: 34km NE of Lucerne Valley, CA
51 km (32 mi) ENE of Apple Valley, CA · 102 km (63 mi) NE of Riverside, CA
- When
- 12:38 am PST on 21 November 2017 ()
- Where
- 50 km (31 mi) east-northeast of Apple Valley, CA · earthquakes near Apple Valley
- Magnitude
- M 2.2 (ml)
- Depth
- 5.5 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 3278 days ago
Earthquake alerts for Apple Valley, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 Apple Valley, 50 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.
How big was it?
This earthquake released about 67 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.
- Mineral, Virginia 2011 M 5.8 230,000× the energy of this one
- Magna, Utah 2020 M 5.7 160,000× the energy of this one
- Around the size people start to feel M 3.0 14× the energy of this one
- This earthquake M 2.2 about 67 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 1,300 times the energy of this one.
Before 2016, the USGS record lists 19 earthquakes of M5 or more within 50 km; the five largest:
- 7.1 The 1999 Hector Mine, California Earthquake · 37 km E of this epicentre
- 6.5 The 1947 Manix, California Earthquake · 41 km NNE of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 50 km SSW of this epicentre
- 5.8 13km WSW of Ludlow, CA · 35 km E of this epicentre
- 5.4 26km NNW of Yucca Valley, CA · 35 km SSE 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 34.6297, -116.6682. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Bernardino County, CA | 51 km (32 mi) | ENE | earthquakes near San Bernardino County |
| Riverside County, CA | 117 km (73 mi) | SSE | earthquakes near Riverside County |
| Orange County, CA | 147 km (91 mi) | SW | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 2.1 18km SW of Ludlow, CA
- 2.1 40km NE of Big Bear City, CA
- 1.6 18km W of Ludlow, CA
- 1.7 19km SSW of Ludlow, CA
- 3.3 26km NW of Ludlow, CA
- 1.7 11km N of Big Bear Lake, CA
- 1.6 13km W of Ludlow, CA
- 1.7 10km WNW of Big Bear Lake, CA
- 2.3 39km ENE of Lucerne Valley, CA
- 1.8 5km NNW of Big Bear City, CA
- 1.6 16km N of Yucca Valley, CA
- 1.5 12km NE of Barstow, CA
- 1.7 7km N of Big Bear City, CA
- 1.5 9km NE of Big Bear City, CA
- 1.9 11km SSE of Lucerne Valley, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.