Earthquake · reviewed by a seismologist
M 3.6ml
Earthquake near Pine Valley, CA
No earthquake was likely felt in Pine Valley in the 24 hours to 7:34 am PST (15:34 UTC). The last one was M 2.4, 6 km (4 mi) NW, at 2:04 am PST on 4 November 2026, estimated intensity II (weak) in town; 17 felt reports to USGS. Every earthquake near Pine Valley
This page: a magnitude 3.6 earthquake was recorded 15 km (9 mi) north-northeast of Pine Valley, CA, at 7:02 pm PDT on 13 September 2025 (02:02 UTC), 7.6 km deep. 244 people have reported feeling it to USGS.
USGS: 15 km NNE of Pine Valley, CA
64 km (40 mi) ENE of San Diego, CA · 48 km (30 mi) ENE of El Cajon, CA
- When
- 7:02 pm PDT on 13 September 2025 ()
- Where
- 15 km (9 mi) north-northeast of Pine Valley, CA · earthquakes near Pine Valley
- Magnitude
- M 3.6 (ml)
- Depth
- 7.6 km below the surface
- Felt
- 244 reports · strongest reported intensity III
- Measured shaking
- intensity IV (ShakeMap)
- Nearest
- San Diego County, 30 km WNW
- 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 345 days ago
Earthquake alerts for Pine Valley, CA
Get a notification in this browser when USGS records an earthquake near Pine Valley, 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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 68 km (42 mi) from the epicentre. In Pine Valley, 15 km away, the estimate is intensity III (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: Pine Valley 15 km, intensity III · Julian 19 km, intensity III · San Diego Country Estates 30 km, intensity II · Alpine 30 km, intensity II · Borrego Springs 35 km, intensity II · Campo 38 km, intensity II · Ramona 38 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 3.5 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 48,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 2,100× the energy of this one
- Magna, Utah 2020 M 5.7 1,500× the energy of this one
- This earthquake M 3.6 about 3.5 tons of TNT
- Around the size people start to feel M 3.0 this one released 7.4× more
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 5.2 on 2025-04-14 — about 280 times the energy of this one.
Before 2016, the USGS record lists 8 earthquakes of M5 or more within 50 km; the five largest:
- 6.6 The 1968 Borrego Mountain, California Earthquake · 43 km NE of this epicentre
- 5.7 Eastern San Diego County, California · 45 km NE of this epicentre
- 5.5 8km NNE of Ocotillo Wells, CA · 45 km NE of this epicentre
- 5.5 1km ENE of Borrego Springs, CA · 36 km NNE of this epicentre
- 5.3 13km ESE of Ocotillo Wells, CA · 48 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 32.9477, -116.4727. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 30 km (18 mi) | WNW | earthquakes near San Diego County |
| Riverside County, CA | 97 km (60 mi) | NNE | earthquakes near Riverside County |
| Imperial County, CA | 105 km (65 mi) | E | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 3.2 4 km SW of Borrego Springs, CA
- 2.3 20 km SW of Ocotillo Wells, CA
- 2.2 14 km N of Borrego Springs, CA
- 1.6 14 km N of Borrego Springs, CA
- 1.6 5 km WNW of Borrego Springs, CA
- 2.4 12 km NNE of Ocotillo Wells, CA
- 1.5 20 km SW of Ocotillo Wells, CA
- 1.9 7 km WNW of Borrego Springs, CA
- 1.7 15 km ESE of Julian, CA
- 1.6 20 km SW of Ocotillo Wells, CA
- 1.6 15 km NE of Borrego Springs, CA
- 2.7 10 km N of Borrego Springs, CA
- 1.5 12 km E of Ocotillo Wells, CA
- 2.2 26 km WNW of Ocotillo, CA
- 1.9 20 km SW of Ocotillo Wells, 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.