Earthquake · reviewed by a seismologist
M 2.8ml
12km ESE of Anza, CA
- When
- Magnitude
- M 2.8 (ml)
- Depth
- 8.6 km below the surface
- Felt
- 12 reports · strongest reported intensity III
- Nearest
- San Diego County, 57 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3518 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 12 people have reported feeling it to USGS.
How big was it?
This earthquake released about 490 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 31,000× the energy of this one
- Magna, Utah 2020 M 5.7 22,000× the energy of this one
- Around the size people start to feel M 3.0 1.9× the energy of this one
- This earthquake M 2.8 about 490 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 33.5043, -116.5590. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Diego County, CA | 57 km (36 mi) | NNE of here | earthquakes near San Diego County |
| Riverside County, CA | 57 km (36 mi) | WSW of here | earthquakes near Riverside County |
| Orange County, CA | 114 km (71 mi) | E of here | earthquakes near Orange County |
| Imperial County, CA | 123 km (77 mi) | WNW of here | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
43 earthquakes have been recorded within 50 km since this one.
- 2.5 11km NW of Anza, CA
- 2.6 11km E of Temecula, CA
- 1.7 8km NE of Aguanga, CA
- 1.7 11km S of Borrego Springs, CA
- 1.6 8km NNE of Borrego Springs, CA
- 1.8 1km SSE of Garnet, CA
- 1.7 12km N of Borrego Springs, CA
- 1.8 7km NNE of Borrego Springs, CA
- 2.0 16km SSE of Hemet, CA
- 1.5 3km NE of San Jacinto, CA
- 1.7 9km NE of Aguanga, CA
- 1.8 10km NE of Indio, CA
- 2.6 10km NE of Indio, CA
- 1.5 16km NNW of Borrego Springs, CA
- 1.6 4km WSW of Borrego Springs, 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 3,700 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.