Earthquake · reviewed by a seismologist
M 1.5ml
15km NW of Ocotillo, CA
- When
- Magnitude
- M 1.5 (ml)
- Depth
- 13 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 66 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3421 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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 32.8392, -116.1013. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Diego County, CA | 66 km (41 mi) | ESE of here | earthquakes near San Diego County |
| Imperial County, CA | 73 km (45 mi) | WSW of here | earthquakes near Imperial County |
| Riverside County, CA | 99 km (62 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
36 earthquakes have been recorded within 50 km since this one.
- 1.8 10km NNE of Ocotillo Wells, CA
- 2.0 24km E of Pine Valley, CA
- 1.7 15km ESE of Ocotillo, CA
- 1.9 11km SW of Salton City, CA
- 1.8 11km SW of Salton City, CA
- 2.5 10km NNE of Ocotillo Wells, CA
- 3.5 10km NNE of Ocotillo Wells, CA
- 1.6 16km WNW of Progreso, B.C., MX
- 1.8 17km NNE of Pine Valley, CA
- 1.7 25km ENE of Pine Valley, CA
- 1.7 20km NNE of Ocotillo, CA
- 2.2 24km E of Pine Valley, CA
- 1.7 8km ESE of Ocotillo Wells, CA
- 1.5 24km E of Pine Valley, CA
- 1.6 18km ESE 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 4.0 on 2016-07-31 — it released about 6,200 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.