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M0.8 earthquake 13 km SE of Temecula, California, United States

A magnitude 0.8 earthquake struck 13 km SE of Temecula, California, United States at 01:32 local time (08:32 UTC) on 30 Sept 2026, at a depth of 7 km, according to USGS. The solution is preliminary and may be revised.

Data: USGS · updated 2026-09-30 08:35 UTC · automatic solution

Magnitude
0.8micro
local magnitude (Richter) (ml)
Depth
7.5 km
Status
Automatic
Origin time
2026-09-30 08:32:22 UTC
Local: 30 Sept 2026, 01:32:22 (America/Los Angeles)
Epicentre
33.424° N, 117.032° W

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Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map

Nearby places

Distance and estimated shaking at nearby places
PlaceDistanceEst. shaking
TemeculaCalifornia, United States · pop. 110,00313 kmINot felt
FallbrookCalifornia, United States · pop. 30,53421 kmINot felt
MurrietaCalifornia, United States · pop. 109,83022 kmINot felt
WildomarCalifornia, United States · pop. 35,63230 kmINot felt
RiversideCalifornia, United States · pop. 317,26168 kmINot felt
IrvineCalifornia, United States · pop. 256,92778 kmINot felt
San DiegoCalifornia, United States · pop. 1,404,45279 kmINot felt
Santa AnaCalifornia, United States · pop. 310,22786 kmINot felt

Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more.

Every agency's solution

Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS · CI.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · CIheadlineSouthern California Seismic Network via U.S. Geological Survey0.8 ml7.5 km33.42° N, 117.03° W–Automatic

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How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 239 g of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 7 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.0 releases about 2× the energy of M0.8, and its waves are about 1.6× taller on a seismogram. Energy: 477 g of TNT vs 239 g of TNT.

Each square is the energy of one M0.8. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

2 later earthquakes within 30 km; the largest was M1.6 8 h ago. 20 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.8

2 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
2.741.63
9.780.35
  1. 1.630 km SSE of Valle Vista, California, United States09-30 11:16
  2. 0.330 km SSE of Valle Vista, California, United States09-30 18:19

Did you feel it?

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Reports on SeismoAtlas

No reports yet.

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Event id ci41340919. First recorded here 30 Sept 2026, 08:37:30 UTC. Solutions: USGS · CI (usgs:ci41340919). Cite as: SeismoAtlas, “M0.8 earthquake 13 km SE of Temecula, California, United States”, https://seismoatlas.com/earthquake/ci41340919-m0-8-earthquake-13-km-se-of-temecula-california-united-states, data from USGS.

JSON: /api/v1/events/ci41340919. SeismoAtlas is not an official warning service.