Earthquake · reviewed by a seismologist
M 1.9ml
10 km S of Mt Laguna, California
- When
- Magnitude
- M 1.9 (ml)
- Depth
- 13 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 44 km NW
- 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 20 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 760,000× the energy of this one
- Magna, Utah 2020 M 5.7 540,000× the energy of this one
- Around the size people start to feel M 3.0 48× the energy of this one
- This earthquake M 1.9 about 20 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 32.7725, -116.4065. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Diego County, CA | 44 km (28 mi) | SE of here | earthquakes near San Diego County |
| Imperial County, CA | 103 km (64 mi) | WSW of here | earthquakes near Imperial County |
| Riverside County, CA | 113 km (70 mi) | SSW of here | earthquakes near Riverside County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
38 earthquakes have been recorded within 50 km since this one.
- 1.6 17km SSW of Ocotillo Wells, CA
- 1.6 16km ESE of Julian, CA
- 1.6 16km ESE of Julian, CA
- 1.8 27km SSW of Ocotillo Wells, CA
- 1.8 27km SSW of Ocotillo Wells, CA
- 2.6 10km SE of Ocotillo Wells, CA
- 2.2 20km NE of Pine Valley, CA
- 2.3 10km NE of Julian, CA
- 1.6 7km S of Borrego Springs, CA
- 1.9 7km S of Borrego Springs, CA
- 1.8 14km SSW of Ocotillo Wells, CA
- 1.9 14km SSW of Ocotillo Wells, CA
- 1.6 9km ESE of San Diego Country Estates, CA
- 1.7 9km ESE of San Diego Country Estates, CA
- 1.7 16km SSW 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.