California earthquakes

M2.5 earthquake 39km WSW of Lompoc, CA

A magnitude 2.5 earthquake struck 39km WSW of Lompoc, CA on Fri, Feb 27, 1987, 3:29 PM PST (23:29 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.8 19km WSW of Vandenberg Air Force Base, 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
2.5 (mc), micro
Local time
UTC
1987-02-27 23:29:16 UTC
Depth
5.8 km (3.6 mi), shallow
Epicenter
34.451° N, 120.815° 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.

Depth from
Operator assigned
Station coverage gap
275°, 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: 16 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 2.439km WSW of Lompoc, CA · 14460 days ago · 6 km deep · 1 km away
  2. 2.639km SW of Lompoc, CA · 14459 days ago · 5 km deep · 2 km away
  3. 2.444km SW of Lompoc, CA · 14455 days ago · 6 km deep · 8 km away
  4. 2.014km NNE of Goleta, CA · 14451 days ago · -1 km deep · 96 km away
  5. 1.812km WNW of Guadalupe, CA · 14451 days ago · 6 km deep · 63 km away
  6. 2.634km WSW of Lompoc, CA · 14446 days ago · 5 km deep · 6 km away
  7. 2.214 km W of Guadalupe, California · 14442 days ago · 3 km deep · 58 km away
  8. 2.214 km W of Guadalupe, California · 14442 days ago · 2 km deep · 58 km away
  9. 2.819km WSW of Vandenberg Air Force Base, CA · 14432 days ago · 5 km deep · 29 km away
  10. 2.18km E of Los Alamos, CA · 14415 days ago · 5 km deep · 66 km away
  11. 2.314km NNE of Goleta, CA · 14414 days ago · 3 km deep · 95 km away
  12. 2.821km NW of Santa Cruz Is. (NW end), CA · 14411 days ago · 5 km deep · 73 km away
  13. 2.39km NNW of Los Olivos, CA · 14408 days ago · 5 km deep · 68 km away
  14. 2.730km WSW of Vandenberg Air Force Base, CA · 14403 days ago · 6 km deep · 22 km away
  15. 2.06km SE of Goleta, CA · 14400 days ago · 5 km deep · 95 km away
  16. 1.730km WSW of Lompoc, CA · 14400 days ago · 5 km deep · 12 km away

Before

  1. 2.534km WSW of Lompoc, CA · 14460 days ago · 5 km deep · 5 km away
  2. 2.747km SW of Lompoc, CA · 14460 days ago · 6 km deep · 10 km away
  3. 3.641km WSW of Lompoc, CA · 14460 days ago · 5 km deep · 2 km away
  4. 2.25km NNW of Los Olivos, CA · 14460 days ago · 5 km deep · 68 km away
  5. 1.717km WSW of Avila Beach, CA · 14463 days ago · 0 km deep · 78 km away
  6. 2.322km WSW of Vandenberg Air Force Base, CA · 14473 days ago · 5 km deep · 29 km away
  7. 3.14km NNE of Vandenberg Air Force Base, CA · 14473 days ago · 5 km deep · 46 km away
  8. 2.415km NNE of Goleta, CA · 14484 days ago · -1 km deep · 96 km away
  9. 2.022km WSW of Vandenberg Air Force Base, CA · 14489 days ago · 6 km deep · 27 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci718006. Read Wed, Sep 30, 2026, 2:58 PM UTC.