California earthquakes

M1.9 earthquake 2km NE of Commerce, CA

A magnitude 1.9 earthquake struck 2km NE of Commerce, CA on Thu, Sep 11, 1947, 1:09 AM GMT-8 (09:09 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.6 10km S of Malibu Beach, CA. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1947-09-11 09:09:43 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
34.016° N, 118.143° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.4 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.29
Depth from
Operator assigned
Station coverage gap
73°
Stations used
3

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.62km SSW of Buena Park, CA · 28878 days ago · 6 km deep · 22 km away
  2. 2.43km NE of Glen Avon, CA · 28873 days ago · 8 km deep · 63 km away
  3. 2.28km SSE of San Pedro, CA · 28872 days ago · 6 km deep · 41 km away
  4. 2.74km NNW of Redlands, CA · 28848 days ago · 15 km deep · 87 km away
  5. 3.610km S of Malibu Beach, CA · 28847 days ago · 6 km deep · 52 km away
  6. 2.510km SSE of Avalon, CA · 28845 days ago · 6 km deep · 85 km away
  7. 2.54km ESE of Lake Arrowhead, CA · 28845 days ago · 6 km deep · 95 km away
  8. 2.99km WSW of Manhattan Beach, CA · 28835 days ago · 6 km deep · 37 km away
  9. 2.921km N of Fillmore, CA · 28832 days ago · 6 km deep · 96 km away
  10. 2.612km SSE of Malibu Beach, CA · 28827 days ago · 6 km deep · 49 km away
  11. 1.93km NW of Villa Park, CA · 28825 days ago · 6 km deep · 35 km away
  12. 2.53km S of Fontana, CA · 28822 days ago · 0 km deep · 63 km away
  13. 3.06km SSW of Redlands, CA · 28821 days ago · 6 km deep · 87 km away
  14. 2.66km W of Lytle Creek, CA · 28820 days ago · 0 km deep · 60 km away

Before

  1. 2.64km ENE of Nuevo, CA · 28883 days ago · 6 km deep · 98 km away
  2. 2.813km WNW of Fallbrook, CA · 28883 days ago · 6 km deep · 96 km away
  3. 2.43km SE of Fontana, CA · 28891 days ago · 0 km deep · 66 km away
  4. 2.03km NE of View Park-Windsor Hills, CA · 28898 days ago · 6 km deep · 17 km away
  5. 2.72km NNE of Placentia, CA · 28902 days ago · 7 km deep · 29 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3358169. Read Sun, Oct 4, 2026, 11:42 PM UTC.