Earthquake · reviewed by a seismologist
M 0.4ml
Earthquake near Anza, CA
USGS: 4 km E of Anza, CA
95 km (59 mi) NNE of San Diego, CA · 32 km (20 mi) SW of Palm Desert, CA
- When
- 11:37 am PDT on 2 October 2026 ()
- Where
- 4 km (2 mi) E of Anza, CA · earthquakes near Anza
- Magnitude
- M 0.4 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 60 km SSW
- Nearest mapped fault
- San Jacinto fault, under 1 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 6 hours ago
A magnitude 0.4 earthquake was recorded 4 km (2 mi) E of Anza, CA, at 11:37 am PDT on 2 October 2026 (18:37 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Idyllwild, Idyllwild-Pine Cove, Aguanga, Rancho Mirage, Cathedral City.
How big was it?
This earthquake released about 0.13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.4 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 110,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 80,000,000× the energy of this one
- Around the size people start to feel M 3.0 7,200× the energy of this one
- This earthquake M 0.4 about 0.13 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 14,000,000 times the energy of this one.
Before 2016, the USGS record lists 13 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 39 km NW of this epicentre
- 6.0 16km WSW of Oasis, CA · 39 km ESE of this epicentre
- 6.0 The 1986 North Palm Springs, California Earthquake · 50 km N of this epicentre
- 5.5 1km ENE of Borrego Springs, CA · 41 km SE of this epicentre
- 5.4 20km NNW of Borrego Springs, CA · 21 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 33.5542, -116.6327. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 60 km (38 mi) | SSW | earthquakes near San Diego County |
| Riverside County, CA | 62 km (38 mi) | ENE | earthquakes near Riverside County |
| Orange County, CA | 107 km (66 mi) | W | earthquakes near Orange County |
| Imperial County, CA | 132 km (82 mi) | ESE | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
2 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 |
|---|---|---|---|
| review status | automatic | reviewed | |
| longitude | -116.63 | -116.63 | |
| depth | 12.98 | 12.47 | |
| magnitude | 0.47 | 0.43 | |
| longitude | -116.63 | -116.63 | |
| latitude | 33.55 | 33.55 | |
| depth | 14.16 | 12.98 | |
| magnitude | 1.02 | 0.47 |
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.