California earthquakes

M1.5 earthquake 32km SSW of Lompoc, CA

A magnitude 1.5 earthquake struck 32km SSW of Lompoc, CA on Wed, Jul 18, 1990, 12:38 PM PDT (19:38 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M3.2 6km SSE 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
1.5 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1990-07-18 19:38:39 UTC
Depth
5.6 km (3.5 mi), shallow
Epicenter
34.371° N, 120.591° 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
305°, 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: 8 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.919 km WSW of Guadalupe, California · 13224 days ago · 1 km deep · 62 km away
  2. 2.06km SE of Goleta, CA · 13208 days ago · 3 km deep · 74 km away
  3. 3.26km SSE of Santa Barbara, CA · 13205 days ago · 6 km deep · 85 km away
  4. 2.16km SE of Goleta, CA · 13203 days ago · 0 km deep · 74 km away
  5. 1.824km ENE of Santa Maria, CA · 13193 days ago · 2 km deep · 84 km away
  6. 1.917km NNE of Goleta, CA · 13188 days ago · 0 km deep · 78 km away
  7. 2.010 km NE of Los Berros, California · 13185 days ago · 4 km deep · 88 km away
  8. 1.813km N of Los Alamos, CA · 13184 days ago · 2 km deep · 62 km away

Before

  1. 2.612km SSW of Santa Rosa Is., CA · 13229 days ago · 5 km deep · 70 km away
  2. 3.56km SW of Santa Rosa Is., CA · 13231 days ago · 5 km deep · 66 km away
  3. 2.511km SSW of Santa Rosa Is., CA · 13232 days ago · 6 km deep · 69 km away
  4. 3.48km SW of Santa Rosa Is., CA · 13232 days ago · 5 km deep · 67 km away
  5. 2.667 km SW of Avila Beach, California · 13233 days ago · 2 km deep · 84 km away
  6. 2.577 km SW of Avila Beach, California · 13233 days ago · 13 km deep · 84 km away
  7. 2.236 km WSW of Avila Beach, California · 13245 days ago · 0 km deep · 84 km away
  8. 2.427km SW of Lompoc, CA · 13245 days ago · 6 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci2001394. Read Sun, Oct 4, 2026, 5:55 AM UTC.