California earthquakes

M2.1 earthquake 42km SW of Lompoc, CA

A magnitude 2.1 earthquake struck 42km SW of Lompoc, CA on Sun, Oct 7, 1979, 8:57 AM PDT (15:57 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.2 16km S of Santa Barbara, 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
2.1 (mh), micro
Local time
UTC
1979-10-07 15:57:42 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
34.340° N, 120.746° 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 2.1 km horizontally, 31.6 km in depth
Depth from
Operator assigned
Station coverage gap
313°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 2.05km ENE of Goleta, CA · 17149 days ago · 15 km deep · 90 km away
  2. 1.58km SSE of Isla Vista, CA · 17144 days ago · 6 km deep · 83 km away
  3. 1.912km SSE of Lompoc, CA · 17141 days ago · 0 km deep · 36 km away
  4. 1.917km WSW of Vandenberg Air Force Base, CA · 17141 days ago · 6 km deep · 39 km away
  5. 2.027km E of Santa Maria, CA · 17140 days ago · 1 km deep · 89 km away
  6. 2.216km S of Santa Barbara, CA · 17138 days ago · 7 km deep · 96 km away
  7. 1.817km S of Santa Barbara, CA · 17136 days ago · 0 km deep · 95 km away
  8. 2.65km WSW of Santa Barbara, CA · 17127 days ago · 11 km deep · 91 km away
  9. 2.87km SW of Santa Barbara, CA · 17127 days ago · 11 km deep · 91 km away
  10. 2.03km SSW of Isla Vista, CA · 17126 days ago · 2 km deep · 80 km away
  11. 2.215km W of Guadalupe, CA · 17125 days ago · 6 km deep · 68 km away
  12. 2.27km SSW of Santa Barbara, CA · 17125 days ago · 5 km deep · 92 km away
  13. 1.614km NNW of Santa Barbara, CA · 17109 days ago · 0 km deep · 95 km away
  14. 2.95km NE of Orcutt, CA · 17109 days ago · 3 km deep · 69 km away
  15. 1.529km ENE of Santa Ynez, CA · 17108 days ago · 6 km deep · 97 km away
  16. 1.69km S of Santa Barbara, CA · 17098 days ago · 4 km deep · 95 km away
  17. 1.912km ENE of Los Olivos, CA · 17095 days ago · 2 km deep · 80 km away

Before

  1. 2.022km NE of Los Olivos, CA · 17158 days ago · 6 km deep · 90 km away
  2. 2.99km SE of Isla Vista, CA · 17160 days ago · 11 km deep · 88 km away
  3. 2.132km SSW of Buellton, CA · 17175 days ago · 6 km deep · 41 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3351921. Read Thu, Sep 24, 2026, 6:17 AM UTC.