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M0.9 earthquake near Pasadena, California, United States

A magnitude 0.9 earthquake struck near Pasadena, California, United States at 02:29 local time (09:29 UTC) on 2 Oct 2026, at a depth of 17 km, according to USGS.

revised from M1.3

Data: USGS · updated 2026-10-02 18:11 UTC · reviewed

Magnitude
0.9micro
local magnitude (Richter) (ml)
revised from 1.3
Depth
17.3 km
Status
Reviewed
Origin time
2026-10-02 09:29:26 UTC
Local: 2 Oct 2026, 02:29:26 (America/Los Angeles)
Epicentre
34.149° N, 118.135° W

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
PasadenaCalifornia, United States · pop. 142,2500 kmINot felt
South PasadenaCalifornia, United States · pop. 26,1513 kmINot felt
AltadenaCalifornia, United States · pop. 42,7775 kmINot felt
AlhambraCalifornia, United States · pop. 85,5515 kmINot felt
Los AngelesCalifornia, United States · pop. 3,820,91415 kmINot felt
AnaheimCalifornia, United States · pop. 350,74240 kmINot felt
Long BeachCalifornia, United States · pop. 474,14042 kmINot felt
Santa AnaCalifornia, United States · pop. 310,22751 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, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · CIheadlineSouthern California Seismic Network via U.S. Geological Survey0.9 mlwas 1.317.3 km34.15° N, 118.14° W–Reviewed · 1 revision

How big was it?

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

It released roughly the energy of 338 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 17 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 1.4× the energy of M0.9, and its waves are about 1.3× taller on a seismogram. Energy: 477 g of TNT vs 338 g of TNT.

Each square is the energy of one M0.9. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

25 later earthquakes within 30 km; the largest was M1.7 15 days ago. 1 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
8.661.2-1
45.850.917
48.200.93
71.591.221
80.920.713
146.311.511
279.130.511
402.650.613
418.371.2-1
420.540.97
456.881.27
494.990.811
587.781.0-1
618.081.111
618.871.711
621.590.911
625.260.79
625.820.811
628.190.710
628.870.711
628.980.810
629.991.311
658.600.89
672.871.111
698.440.57
  1. 1.73 km S of Glendale, California, United States10-28 04:21
  2. 1.5Near Mayflower Village, California, United States10-08 11:47
  3. 1.36 km NE of Los Angeles, California, United States10-28 15:29
  4. 1.212 km ENE of Santa Monica, California, United States10-21 10:21
  5. 1.26 km NNW of Azusa, California, United States10-02 18:08
  6. 1.2Near Pico Rivera, California, United States10-05 09:04
  7. 1.26 km NNW of Azusa, California, United States10-19 19:51
  8. 1.14 km S of Glendale, California, United States10-28 03:34
  9. 1.1Near South El Monte, California, United States10-30 10:21
  10. 1.05 km NNW of Azusa, California, United States10-26 21:16
  11. 0.9Near South San Gabriel, California, United States10-04 07:20
  12. 0.9Near Alhambra, California, United States10-19 22:01
  13. 0.9Near Charter Oak, California, United States10-04 09:41
  14. 0.94 km S of Glendale, California, United States10-28 07:04
  15. 0.83 km NNW of Sierra Madre, California, United States10-23 00:28
  16. 0.85 km N of Inglewood, California, United States10-29 20:05
  17. 0.83 km SSW of Glendale, California, United States10-28 11:18
  18. 0.83 km SSW of Glendale, California, United States10-28 14:28
  19. 0.7Near South Pasadena, California, United States10-05 18:24
  20. 0.73 km SSW of Glendale, California, United States10-28 13:40
  21. 0.74 km SSW of Glendale, California, United States10-28 14:21
  22. 0.77 km NE of La Crescenta-Montrose, California, United States10-28 10:44
  23. 0.6Near Covina, California, United States10-19 04:08
  24. 0.56 km N of Altadena, California, United States10-31 11:55
  25. 0.55 km ENE of Los Angeles, California, United States10-14 00:37

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

Event id ci41342015. First recorded here 2 Oct 2026, 09:32:33 UTC. Solutions: USGS · CI (usgs:ci41342015). Cite as: SeismoAtlas, “M0.9 earthquake near Pasadena, California, United States”, https://seismoatlas.com/earthquake/ci41342015-m0-9-earthquake-near-pasadena-california-united-states, data from USGS.

JSON: /api/v1/events/ci41342015. SeismoAtlas is not an official warning service.