California earthquakes

M3.0 earthquake 6km W of Alpine, CA

A magnitude 3.0 earthquake struck 6km W of Alpine, CA on Sat, Aug 12, 1933, 9:27 AM GMT-8 (17:27 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.1 4km NNW of Murrieta, 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
3.0 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1933-08-12 17:27:15 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
32.840° N, 116.826° 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.

Magnitude uncertainty
±0.03
Depth from
Operator assigned
Station coverage gap
356°, poorly surrounded by stations
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 23 in the 30 days before it.

After

  1. 2.55km SE of San Clemente, CA · 34017 days ago · 6 km deep · 93 km away
  2. 2.515km NW of Camp Pendleton North, CA · 34007 days ago · 6 km deep · 84 km away
  3. 2.113km SSW of San Clemente, CA · 34005 days ago · 6 km deep · 94 km away
  4. 2.911km ESE of San Clemente, CA · 34003 days ago · 6 km deep · 88 km away
  5. 2.76km S of San Clemente, CA · 34002 days ago · 6 km deep · 93 km away
  6. 2.44km SW of Borrego Springs, CA · 33999 days ago · 6 km deep · 59 km away
  7. 2.58km ENE of Palomar Observatory, CA · 33996 days ago · 6 km deep · 61 km away
  8. 3.14km NNW of Murrieta, CA · 33993 days ago · 6 km deep · 91 km away
  9. 2.67km SSW of Idyllwild, CA · 33989 days ago · 6 km deep · 95 km away
  10. 3.012km WNW of Julian, CA · 33988 days ago · 6 km deep · 32 km away
  11. 2.38km S of Idyllwild, CA · 33987 days ago · 6 km deep · 93 km away
  12. 2.56km NW of Lake Henshaw, CA · 33985 days ago · 6 km deep · 49 km away
  13. 1.84km NW of Wildomar, CA · 33974 days ago · 6 km deep · 98 km away
  14. 3.012km E of Aguanga, CA · 33966 days ago · 6 km deep · 69 km away
  15. 3.016km E of Ocotillo Wells, CA · 33966 days ago · 6 km deep · 87 km away

Before

  1. 2.35km NE of San Clemente, CA · 34022 days ago · 6 km deep · 97 km away
  2. 2.513km SW of Cathedral City, CA · 34023 days ago · 6 km deep · 100 km away
  3. 2.813km WSW of Ocotillo, CA · 34024 days ago · 6 km deep · 68 km away
  4. 4.616km NNW of Ocotillo Wells, CA · 34027 days ago · 6 km deep · 76 km away
  5. 4.48km WSW of Salton City, CA · 34027 days ago · 6 km deep · 89 km away
  6. 2.69km WNW of Fallbrook, CA · 34028 days ago · 6 km deep · 80 km away
  7. 2.710km SSE of San Clemente, CA · 34029 days ago · 6 km deep · 89 km away
  8. 3.93km SE of San Clemente, CA · 34029 days ago · 6 km deep · 95 km away
  9. 2.37km WNW of Fallbrook, CA · 34029 days ago · 6 km deep · 78 km away
  10. 2.56km N of Vista, CA · 34033 days ago · 6 km deep · 60 km away
  11. 2.54km SW of Wildomar, CA · 34040 days ago · 6 km deep · 93 km away
  12. 2.616km E of Murrieta Hot Springs, CA · 34040 days ago · 6 km deep · 81 km away
  13. 2.113km N of Aguanga, CA · 34040 days ago · 6 km deep · 80 km away
  14. 3.510km ESE of Borrego Springs, CA · 34040 days ago · 6 km deep · 65 km away
  15. 2.214km ENE of San Clemente, CA · 34042 days ago · 6 km deep · 93 km away
  16. 2.28km ESE of San Clemente, CA · 34042 days ago · 6 km deep · 91 km away
  17. 3.03km SSE of San Clemente, CA · 34042 days ago · 6 km deep · 95 km away
  18. 2.53km SSE of San Clemente, CA · 34042 days ago · 6 km deep · 95 km away
  19. 2.83km SSE of San Clemente, CA · 34043 days ago · 6 km deep · 95 km away
  20. 2.63km SSE of San Clemente, CA · 34043 days ago · 6 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3361133. Read Sun, Oct 4, 2026, 6:18 AM UTC.