California earthquakes

M2.4 earthquake 9 km NE of Alta, California

A magnitude 2.4 earthquake struck 9 km NE of Alta, California on Tue, Dec 13, 1983, 2:01 PM PST (22:01 UTC), 41 km (26 mi) below the surface.

A larger quake followed: M2.7 2 km NNE of Delleker, California. This one was a foreshock.

Alta 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
2.4 (md), micro
Local time
UTC
1983-12-13 22:01:16 UTC
Depth
41.2 km (25.6 mi), shallow
Epicenter
39.267° N, 120.727° 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 4.4 km horizontally, 2.8 km in depth
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
230°, 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: 12 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 2.03 km W of Truckee, California · 15616 days ago · 3 km deep · 43 km away
  2. 2.72 km NNE of Delleker, California · 15610 days ago · 0 km deep · 65 km away
  3. 1.98 km SW of Alpine Village, California · 15595 days ago · 3 km deep · 95 km away
  4. 2.12 km WNW of Lake Davis, California · 15594 days ago · 9 km deep · 71 km away
  5. 1.77 km S of Clipper Mills, California · 15587 days ago · 19 km deep · 42 km away
  6. 2.315 km E of Graniteville, California · 15585 days ago · 6 km deep · 23 km away
  7. 2.710 km WNW of Alpine Village, California · 15583 days ago · 7 km deep · 85 km away
  8. 1.52 km S of Pine Grove, California · 15583 days ago · 4 km deep · 98 km away
  9. 1.83 km N of Tobin, California · 15578 days ago · 3 km deep · 92 km away
  10. 2.64 km WNW of Mesa Vista, California · 15574 days ago · 1 km deep · 91 km away
  11. 2.68 km SE of Dollar Point, California · 15569 days ago · 1 km deep · 61 km away
  12. 2.51 km ESE of Tahoma, California · 15569 days ago · 0 km deep · 58 km away

Before

  1. 2.29 km SW of South Lake Tahoe, California · 15632 days ago · 2 km deep · 72 km away
  2. 2.61 km W of Plumas Eureka, California · 15637 days ago · 5 km deep · 58 km away
  3. 2.15 km NE of Taylorsville, California · 15645 days ago · 3 km deep · 93 km away
  4. 2.77 km NNW of Spring Garden, California · 15646 days ago · -1 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1108390. Read Tue, Sep 22, 2026, 8:55 PM UTC.