Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Barstow Heights, CA
No earthquake was likely felt in Barstow Heights in the 24 hours to 5:32 am PST (13:32 UTC). The last one was M 1.8, 6 km (4 mi) NNE, at 3:18 pm PDT on 17 July 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Barstow Heights
This page: a magnitude 1.7 earthquake was recorded 49 km (31 mi) southeast of Barstow Heights, CA, at 3:13 pm PDT on 6 October 2026 (22:13 UTC), 7.8 km deep.
USGS: 37 km ENE of Lucerne Valley, CA
55 km (34 mi) E of Apple Valley, CA · 103 km (64 mi) NE of Riverside, CA
- When
- 3:13 pm PDT on 6 October 2026 ()
- Where
- 49 km (31 mi) southeast of Barstow Heights, CA · earthquakes near Barstow Heights
- Magnitude
- M 1.7 (ml)
- Depth
- 7.8 km below the surface
- Felt
- no reports yet
- Nearest
- San Bernardino County, 48 km NE
- Nearest mapped fault
- Camp Rock-Emerson-Copper Mountain fault, 2 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 37 days ago
Earthquake alerts for Barstow Heights, CA
Get a notification in this browser when USGS records an earthquake near Barstow Heights, CA. No account or email needed.
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 10 km (6 mi) from the epicentre. In Barstow Heights, 49 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 11 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.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 4.9 on 2024-07-29 — about 57,000 times the energy of this one.
Before 2016, the USGS record lists 20 earthquakes of M5 or more within 50 km; the five largest:
- 7.3 The 1992 Landers, California Earthquake · 49 km SSE of this epicentre
- 7.1 The 1999 Hector Mine, California Earthquake · 32 km E of this epicentre
- 6.5 The 1947 Manix, California Earthquake · 42 km N of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 49 km SSW of this epicentre
- 5.8 13km WSW of Ludlow, CA · 31 km ENE 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 34.6102, -116.6188. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Bernardino County, CA | 48 km (30 mi) | NE | earthquakes near San Bernardino County |
| Riverside County, CA | 113 km (70 mi) | SSE | earthquakes near Riverside County |
| Orange County, CA | 149 km (93 mi) | SW | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
17 earthquakes have been recorded within 50 km since this one.
- 1.5 10 km ESE of Big Bear City, CA
- 0.8 10 km ESE of Big Bear City, CA
- 0.5 10 km ESE of Big Bear City, CA
- 1.1 3 km N of Big Bear City, CA
- 0.9 3 km NNW of Big Bear City, CA
- 1.0 21 km ENE of Big Bear City, CA
- 1.3 33 km SSW of Ludlow, CA
- 1.4 20 km NNE of Joshua Tree, CA
- 0.7 6 km N of Big Bear City, CA
- 1.1 4 km NNW of Big Bear City, CA
- 1.8 28 km E of Barstow, CA
- 1.3 5 km NW of Big Bear Lake, CA
- 0.8 6 km N of Big Bear City, CA
- 1.1 17 km NNE of Apple Valley, CA
- 1.1 4 km NNW of Big Bear City, 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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| review status | automatic | reviewed | |
| longitude | -116.62 | -116.62 | |
| latitude | 34.61 | 34.61 | |
| depth | 7.01 | 7.82 | |
| magnitude | 1.85 | 1.7 |
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.