Earthquake · reviewed by a seismologist
M 2.1ml
12km SSW of Borrego Springs, CA
- When
- Magnitude
- M 2.1 (ml)
- Depth
- 13 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 35 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1384 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 51 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 5.8 300,000× the energy of this one
- Magna, Utah 2020 M 5.7 210,000× the energy of this one
- Around the size people start to feel M 3.0 19× the energy of this one
- This earthquake M 2.1 about 51 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.
Where
Epicentre 33.1660, -116.4373. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Diego County, CA | 35 km (22 mi) | ENE of here | earthquakes near San Diego County |
| Riverside County, CA | 75 km (46 mi) | SSW of here | earthquakes near Riverside County |
| Imperial County, CA | 102 km (63 mi) | W of here | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 2.2 16km SSE of Anza, CA
- 1.5 22km ESE of Anza, CA
- 2.0 20km NW of Ocotillo, CA
- 1.6 16km N of Borrego Springs, CA
- 3.2 16km N of Borrego Springs, CA
- 2.0 16km N of Borrego Springs, CA
- 1.7 7km NNE of Borrego Springs, CA
- 1.6 28km SSW of Ocotillo Wells, CA
- 1.8 16km N of Borrego Springs, CA
- 1.5 6km NNE of Lake Henshaw, CA
- 2.6 16km N of Borrego Springs, CA
- 1.7 16km N of Borrego Springs, CA
- 1.5 25km ENE of Pine Valley, CA
- 2.1 2km NE of Ocotillo Wells, CA
- 1.9 6km ESE 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.
For this area
The largest earthquake within 50 km in our catalogue was M 5.2 on 2016-06-10 — it released about 36,000 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.