M2.9 earthquake 56km WSW of Lompoc, CA
A magnitude 2.9 earthquake struck 56km WSW of Lompoc, CA on Tue, Mar 23, 1982, 8:47 AM PST (16:47 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M3.8 4km SSE of Santa Maria, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.9 (mc), micro
- Local time
- UTC
- 1982-03-23 16:47:23 UTC
- Depth
- 5.3 km (3.3 mi), shallow
- Epicenter
- 34.385° N, 120.990° W
- Region
- California
- 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
- 319°, 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: 4 in the 60 days after this one and 5 in the 30 days before it.
After
- 2.110 km W of Avila Beach, California · 16243 days ago · 0 km deep · 87 km away
- 3.84km SSE of Santa Maria, CA · 16216 days ago · 5 km deep · 79 km away
- 2.24km SW of Santa Maria, CA · 16215 days ago · 5 km deep · 77 km away
- 2.24km W of Orcutt, CA · 16210 days ago · 5 km deep · 70 km away
Before
- 1.52 km SSW of Edna, California · 16256 days ago · 4 km deep · 95 km away
- 3.52 km WSW of Edna, California · 16263 days ago · 0 km deep · 95 km away
- 2.21 km N of Grover Beach, California · 16266 days ago · 7 km deep · 90 km away
- 2.632km WSW of Vandenberg Air Force Base, CA · 16267 days ago · 5 km deep · 32 km away
- 2.58km N of Vandenberg Air Force Base, CA · 16276 days ago · 5 km deep · 65 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci527689. Read Tue, Sep 22, 2026, 3:13 PM UTC.