Earthquake · automatic estimate, may change
M 0.5ml
Earthquake near Anza, CA
USGS: 9 km WNW of Anza, CA
92 km (57 mi) NNE of San Diego, CA · 28 km (17 mi) SE of Hemet, CA
- When
- 1:14 am PDT on 3 October 2026 ()
- Where
- 9 km (5 mi) WNW of Anza, CA · earthquakes near Anza
- Magnitude
- M 0.5 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 62 km S
- Nearest mapped fault
- San Jacinto fault, 6 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 4 hours ago
A magnitude 0.5 earthquake was recorded 9 km (5 mi) WNW of Anza, CA, at 1:14 am PDT on 3 October 2026 (08:14 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, Valle Vista, East Hemet, Hemet.
How big was it?
This earthquake released about 0.14 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 75,000,000× the energy of this one
- Around the size people start to feel M 3.0 6,700× the energy of this one
- This earthquake M 0.5 about 0.14 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 13,000,000 times the energy of this one.
Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 28 km NW of this epicentre
- 6.0 The 1986 North Palm Springs, California Earthquake · 48 km NNE of this epicentre
- 5.4 20km NNW of Borrego Springs, CA · 32 km SE of this epicentre
- 5.3 6km SSE of Hemet, CA · 21 km NW of this epicentre
- 5.3 18km ESE of Anza, CA · 27 km ESE 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 33.5850, -116.7595. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 62 km (39 mi) | S | earthquakes near San Diego County |
| Riverside County, CA | 72 km (45 mi) | ENE | earthquakes near Riverside County |
| Orange County, CA | 95 km (59 mi) | W | earthquakes near Orange 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 |
|---|---|---|---|
| longitude | -116.76 | -116.76 | |
| latitude | 33.59 | 33.59 | |
| depth | 11.54 | 11.89 | |
| magnitude | 1.08 | 0.45 |
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.