12 km NNW of Aguanga, CA

19 km (12 mi) ENE of Temecula, CA · 147 km (91 mi) ESE of Los Angeles, CA

2026-10-01 00:05 UTC · 28 km deep · released about 1.3 lb of TNT

Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.

When: 2026-10-01 00:05 UTC
Magnitude: M 1.1 (ml)
Depth: 28 km below the surface
Felt: no reports yet
Nearest: San Diego County, 59 km SSE
Nearest mapped fault: Elsinore fault, 15 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 1 hour ago · 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 1.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.1 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 12,000,000× the energy of this one
Magna, Utah 2020 M 5.7 8,200,000× the energy of this one
Around the size people start to feel M 3.0 730× the energy of this one
This earthquake M 1.1 about 1.3 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 1,400,000 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 · 25 km N of this epicentre Apr 21, 1918
6.0 The 1910 Lake Elsinore, California Earthquake · 47 km WNW of this epicentre May 15, 1910
5.4 20km NNW of Borrego Springs, CA · 44 km ESE of this epicentre Jul 7, 2010
5.3 6km SSE of Hemet, CA · 19 km N of this epicentre Sep 23, 1963
5.3 18km ESE of Anza, CA · 40 km E of this epicentre Feb 25, 1980

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

Map loads when it scrolls into view

Epicentre 33.5375, -116.9302. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction from the epicentre
San Diego County, CA	59 km (37 mi)	SSE	earthquakes near San Diego County
Orange County, CA	80 km (50 mi)	WNW	earthquakes near Orange County
Riverside County, CA	89 km (55 mi)	ENE	earthquakes near Riverside 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.

0.8 21 km ESE of Anza, CA 00:43 UTC
0.6 21 km ESE of Anza, CA 00:08 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 01:35 UTC. 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.