Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Anza, CA
No earthquake was likely felt in Anza in the 24 hours to 8:39 am PST (16:39 UTC). The last one was M 2.6, 17 km (10 mi) S, at 10:44 pm PST on 5 November 2026, estimated intensity II (weak) in town; 7 felt reports to USGS. Every earthquake near Anza
This page: a magnitude 1.6 earthquake was recorded in Anza, CA, at 3:17 am PDT on 10 July 2025 (10:17 UTC), 8.6 km deep.
USGS: 1 km SSW of Anza, CA
92 km (57 mi) NNE of San Diego, CA · 36 km (22 mi) SW of Palm Desert, CA
- When
- 3:17 am PDT on 10 July 2025 ()
- Where
- in Anza, CA · earthquakes near Anza
- Magnitude
- M 1.6 (ml)
- Depth
- 8.6 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 59 km S
- Nearest mapped fault
- San Jacinto fault, 4 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 490 days ago
Earthquake alerts for Anza, CA
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Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 8 km (5 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Likely felt in: Anza in town, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
- Around the size people start to feel M 3.0 110× the energy of this one
- This earthquake M 1.6 about 8.7 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 210,000 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 · 36 km NW of this epicentre
- 6.0 16km WSW of Oasis, CA · 43 km ESE of this epicentre
- 5.5 1km ENE of Borrego Springs, CA · 43 km SE of this epicentre
- 5.4 20km NNW of Borrego Springs, CA · 24 km SE of this epicentre
- 5.3 6km SSE of Hemet, CA · 30 km NW 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 33.5478, -116.6763. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 59 km (37 mi) | S | earthquakes near San Diego County |
| Riverside County, CA | 66 km (41 mi) | ENE | earthquakes near Riverside County |
| Orange County, CA | 103 km (64 mi) | W | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
55 earthquakes have been recorded within 50 km since this one.
- 2.1 4 km SSW of Idyllwild, CA
- 1.8 4 km WNW of Borrego Springs, CA
- 1.7 3 km WNW of Valle Vista, CA
- 2.2 5 km W of Borrego Springs, CA
- 2.5 11 km ENE of Cabazon, CA
- 2.0 14 km SE of Anza, CA
- 1.5 15 km SE of Anza, CA
- 1.9 10 km NNW of Warner Springs, CA
- 2.0 4 km W of San Jacinto, CA
- 2.5 4 km N of San Jacinto, CA
- 1.9 6 km WSW of Anza, CA
- 3.3 10 km SW of Idyllwild, CA
- 2.1 24 km NNW of Borrego Springs, CA
- 2.0 16 km NE of Borrego Springs, CA
- 1.5 6 km SE of Beaumont, 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.
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.