California earthquakes

M2.7 earthquake 23km SSW of Lompoc, CA

A magnitude 2.7 earthquake struck 23km SSW of Lompoc, CA on Mon, Dec 17, 1934, 5:51 AM GMT-8 (13:51 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.3 27km SW of Lompoc, CA. This one was a foreshock.

Lompoc forecastMore in California

Map

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

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The earthquake

Magnitude
2.7 (ml), micro
Local time
UTC
1934-12-17 13:51:47 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
34.442° N, 120.534° 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 38.7 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
358°, poorly surrounded by stations
Stations used
2

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 2 in the 30 days before it.

After

  1. 2.719km S of Santa Barbara, CA · 33522 days ago · 6 km deep · 81 km away
  2. 2.626km S of Lompoc, CA · 33522 days ago · 6 km deep · 7 km away
  3. 4.327km SW of Lompoc, CA · 33521 days ago · 6 km deep · 9 km away
  4. 3.234km WNW of San Miguel Is., CA · 33521 days ago · 6 km deep · 34 km away
  5. 3.231km WNW of San Miguel Is., CA · 33521 days ago · 6 km deep · 31 km away
  6. 2.912km NW of Santa Cruz Is. (E end), CA · 33519 days ago · 6 km deep · 92 km away
  7. 2.437km SW of Lompoc, CA · 33519 days ago · 6 km deep · 18 km away
  8. 2.928km WSW of Lompoc, CA · 33519 days ago · 6 km deep · 25 km away
  9. 2.511km SW of Lompoc, CA · 33518 days ago · 6 km deep · 15 km away
  10. 2.734km WSW of Vandenberg Air Force Base, CA · 33516 days ago · 6 km deep · 37 km away
  11. 3.350km NW of San Miguel Is., CA · 33515 days ago · 6 km deep · 31 km away
  12. 2.832km NNW of San Miguel Is., CA · 33514 days ago · 6 km deep · 17 km away
  13. 3.03km WSW of Santa Barbara, CA · 33485 days ago · 6 km deep · 74 km away
  14. 2.518km N of Santa Barbara, CA · 33481 days ago · 6 km deep · 75 km away

Before

  1. 4.727km SW of Lompoc, CA · 33522 days ago · 6 km deep · 11 km away
  2. 2.54km WNW of Carpinteria, CA · 33548 days ago · 6 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3362621. Read Sun, Sep 27, 2026, 4:59 AM UTC.