Earthquake · reviewed by a seismologist
M 2.1ml
Earthquake near Victorville, CA
No earthquake was likely felt in Victorville in the 24 hours to 3:12 am PST (11:12 UTC). The last one was M 4.3, 99 km (61 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 Victorville
This page: a magnitude 2.1 earthquake was recorded 4 km (2 mi) south-southwest of Victorville, CA, at 4:59 am PDT on 8 August 2017 (11:59 UTC), 11 km deep. 1 person has reported feeling it to USGS.
USGS: 4km E of Mountain View Acres, CA
5 km (3 mi) ESE of Victorville, CA · 115 km (71 mi) ENE of Los Angeles, CA
- When
- 4:59 am PDT on 8 August 2017 ()
- Where
- 4 km (2 mi) south-southwest of Victorville, CA · earthquakes near Victorville
- Magnitude
- M 2.1 (ml)
- Depth
- 11 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Los Angeles County, 94 km WSW
- Nearest mapped fault
- North Frontal thrust system, 14 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 3304 days ago
Earthquake alerts for Victorville, 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 14 km (9 mi) from the epicentre. In Victorville, 4 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: Hesperia 9 km, intensity II · Apple Valley 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 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
- Magna, Utah 2020 M 5.7 250,000× the energy of this one
- Around the size people start to feel M 3.0 22× the energy of this one
- This earthquake M 2.1 about 43 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 8 earthquakes of M5 or more within 50 km; the five largest:
- 6.2 3 km SE of San Bernardino, California · 46 km S of this epicentre
- 5.6 7km ENE of Running Springs, CA · 38 km SE of this epicentre
- 5.3 Near San Bernardino, California · 39 km SSE of this epicentre
- 5.3 6km WNW of Big Bear Lake, CA · 41 km SE of this epicentre
- 5.3 1km N of Big Bear Lake, California · 46 km SE 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 34.5028, -117.3070. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Los Angeles County, CA | 94 km (58 mi) | WSW | earthquakes near Los Angeles County |
| Orange County, CA | 102 km (63 mi) | SSW | earthquakes near Orange County |
| San Bernardino County, CA | 110 km (68 mi) | ENE | earthquakes near San Bernardino County |
| Riverside County, CA | 148 km (92 mi) | SE | earthquakes near Riverside County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 2.1 6km NE of San Bernardino, CA
- 2.5 2km NW of Big Bear City, CA
- 1.6 9km NNW of Big Bear Lake, CA
- 1.7 13km NNE of Yucaipa, CA
- 1.5 5km ENE of Rancho Cucamonga, CA
- 2.5 10km N of Lytle Creek, CA
- 2.3 1km NNW of Colton, CA
- 1.5 6km N of Big Bear City, CA
- 1.7 14km SW of Lucerne Valley, CA
- 1.7 2km SSE of Muscoy, CA
- 2.1 2km NNE of Loma Linda, CA
- 2.6 6km ENE of Lake Arrowhead, CA
- 1.9 6km ENE of Lake Arrowhead, CA
- 1.5 6km NE of Lake Arrowhead, CA
- 1.5 6km NE of Lake Arrowhead, 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.