Earthquake · automatic estimate, may change
M 1.3ml
21 km ESE of Anza, CA
99 km (62 mi) NE of San Diego, CA · 27 km (17 mi) SSW of Palm Desert, CA
- When
- Magnitude
- M 1.3 (ml)
- Depth
- 3.3 km below the surface
- Felt
- no reports yet
- Nearest
- Riverside County, 49 km ENE
- Nearest mapped fault
- San Jacinto fault, under 1 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 1 hour 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 2.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 6,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 4,700,000× the energy of this one
- Around the size people start to feel M 3.0 420× the energy of this one
- This earthquake M 1.3 about 2.3 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.
For this area
The largest earthquake within 50 km since 2016 was M 5.2 on 2016-06-10 — about 810,000 times the energy of this one.
Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:
- 6.6 The 1968 Borrego Mountain, California Earthquake · 49 km SE of this epicentre
- 6.4 The 1954 San Jacinto Fault, California Earthquake · 42 km ESE of this epicentre
- 6.0 16km WSW of Oasis, CA · 22 km ESE of this epicentre
- 5.7 Eastern San Diego County, California · 47 km SE of this epicentre
- 5.5 8km NNE of Ocotillo Wells, CA · 47 km SE of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 33.5033, -116.4552. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Riverside County, CA | 49 km (30 mi) | ENE | earthquakes near Riverside County |
| San Diego County, CA | 61 km (38 mi) | SSW | earthquakes near San Diego County |
| Imperial County, CA | 114 km (71 mi) | ESE | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
3 earthquakes have been recorded within 50 km since this one.
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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| location | 21 km SW of La Quinta, CA | 21 km ESE of Anza, CA | |
| longitude | -116.44 | -116.46 | |
| latitude | 33.51 | 33.5 | |
| depth | 4.41 | 3.3 | |
| magnitude | 1.38 | 1.25 |
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.