California earthquakes

M1.5 earthquake 4 km SSE of Rocklin, California

A magnitude 1.5 earthquake struck 4 km SSE of Rocklin, California on Tue, Mar 30, 1982, 2:57 PM PST (22:57 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M2.8 6km ESE of Garden Acres, CA. This one was a foreshock.

Rocklin 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 (md), micro
Local time
UTC
1982-03-30 22:57:41 UTC
Depth
8.8 km (5.5 mi), shallow
Epicenter
38.749° N, 121.218° 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 0.8 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
157°
Stations used
8

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 11 in the 30 days before it.

After

  1. 2.55 km W of Bangor, California · 16240 days ago · 3 km deep · 75 km away
  2. 1.82 km E of Oroville, California · 16219 days ago · 9 km deep · 89 km away
  3. 2.312 km ESE of Graniteville, California · 16218 days ago · 15 km deep · 90 km away
  4. 2.86km ESE of Garden Acres, CA · 16213 days ago · 6 km deep · 90 km away
  5. 2.34 km SE of Palermo, California · 16209 days ago · 6 km deep · 77 km away
  6. 1.64 km SE of Palermo, California · 16207 days ago · 6 km deep · 77 km away
  7. 1.94 km SSE of Moskowite Corner, California · 16199 days ago · 1 km deep · 91 km away
  8. 1.51 km W of Moskowite Corner, California · 16194 days ago · 12 km deep · 93 km away

Before

  1. 2.03 km E of Discovery Bay, California · 16254 days ago · 3 km deep · 99 km away
  2. 1.97 km SSW of Sierra City, California · 16258 days ago · 24 km deep · 96 km away
  3. 1.911 km SSE of Elmira, California · 16264 days ago · 16 km deep · 78 km away
  4. 1.73 km ESE of Loomis, California · 16272 days ago · 0 km deep · 9 km away
  5. 1.75 km SSE of Rocklin, California · 16277 days ago · 11 km deep · 1 km away
  6. 1.55 km ESE of Palermo, California · 16278 days ago · 8 km deep · 77 km away
  7. 2.66 km SE of Palermo, California · 16278 days ago · 6 km deep · 76 km away
  8. 2.511 km SW of Kingvale, California · 16278 days ago · 44 km deep · 82 km away
  9. 2.93 km W of Granite Bay, California · 16282 days ago · 10 km deep · 2 km away
  10. 2.24 km SSE of Rocklin, California · 16282 days ago · 12 km deep · 0 km away
  11. 1.87 km SSW of Sierra City, California · 16283 days ago · 16 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1073370. Read Wed, Sep 30, 2026, 2:29 AM UTC.