Earthquake · reviewed by a seismologist
M 2.1ml
16km SE of Ocotillo Wells, CA
- When
- Magnitude
- M 2.1 (ml)
- Depth
- 11 km below the surface
- Felt
- 4 reports · strongest reported intensity III
- Nearest
- Imperial County, 61 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2232 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.
How big was it?
This earthquake released about 40 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 5.8 380,000× the energy of this one
- Magna, Utah 2020 M 5.7 270,000× the energy of this one
- Around the size people start to feel M 3.0 24× the energy of this one
- This earthquake M 2.1 about 40 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 33.0397, -116.0075. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Imperial County, CA | 61 km (38 mi) | W of here | earthquakes near Imperial County |
| San Diego County, CA | 72 km (45 mi) | E of here | earthquakes near San Diego County |
| Riverside County, CA | 77 km (48 mi) | S of here | earthquakes near Riverside County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 1.6 21km W of Westmorland, CA
- 1.6 2km SSE of Brawley, CA
- 1.6 1km NE of Brawley, CA
- 1.5 4km SW of Salton City, CA
- 1.6 27km ENE of Pine Valley, CA
- 1.5 10km NNE of Ocotillo Wells, CA
- 2.2 23km NW of Ocotillo, CA
- 1.9 27km SSW of Ocotillo Wells, CA
- 1.9 24km SW of Ocotillo Wells, CA
- 2.1 11km NE of Ocotillo Wells, CA
- 1.6 10km NNE of Borrego Springs, CA
- 1.5 10km SW of Niland, CA
- 1.6 10km SW of Ocotillo Wells, CA
- 1.6 17km ESE of Julian, CA
- 1.6 23km NW of Ocotillo, 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 4.6 on 2020-08-10 — it released about 5,800 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.