Earthquake · reviewed by a seismologist
M 0.5ml
Earthquake near Anza, CA
USGS: 12 km W of Anza, CA
90 km (56 mi) NNE of San Diego, CA · 26 km (16 mi) SE of Hemet, CA
- When
- 12:23 pm PDT on 2 October 2026 ()
- Where
- 12 km (7 mi) W of Anza, CA · earthquakes near Anza
- Magnitude
- M 0.5 (ml)
- Depth
- 6.1 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 61 km S
- Nearest mapped fault
- San Jacinto fault, 10 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 0.5 earthquake was recorded 12 km (7 mi) W of Anza, CA, at 12:23 pm PDT on 2 October 2026 (19:23 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Aguanga, Idyllwild, Idyllwild-Pine Cove, Valle Vista, East Hemet, Hemet.
How big was it?
This earthquake released about 0.18 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 86,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 61,000,000× the energy of this one
- Around the size people start to feel M 3.0 5,400× the energy of this one
- This earthquake M 0.5 about 0.18 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 10,000,000 times the energy of this one.
Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 26 km NW of this epicentre
- 5.4 20km NNW of Borrego Springs, CA · 35 km ESE of this epicentre
- 5.3 6km SSE of Hemet, CA · 19 km NW of this epicentre
- 5.3 18km ESE of Anza, CA · 30 km ESE of this epicentre
- 5.2 12km WSW of Morongo Valley, CA · 49 km N 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 33.5718, -116.8010. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 61 km (38 mi) | S | earthquakes near San Diego County |
| Riverside County, CA | 76 km (47 mi) | ENE | earthquakes near Riverside County |
| Orange County, CA | 91 km (57 mi) | W | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
No further 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 | -116.81 | -116.8 | |
| latitude | 33.57 | 33.57 | |
| depth | 6.05 | 6.09 | |
| magnitude | 0.52 | 0.51 |
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.