California earthquakes

M2.4 earthquake Central California

A magnitude 2.4 earthquake struck in Central California on Fri, Sep 16, 1983, 5:34 AM PDT (12:34 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.6 11 km S of Yosemite Valley, California. This one was a foreshock.

Catheys Valley 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1983-09-16 12:34:05 UTC
Depth
6.1 km (3.8 mi), shallow
Epicenter
37.405° N, 120.126° 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 1.1 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
98°
Stations used
10

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 1.921 km NNE of Big Creek, California · 15723 days ago · 18 km deep · 85 km away
  2. 1.910 km W of Mammoth Lakes, California · 15716 days ago · 0 km deep · 95 km away
  3. 1.67 km WSW of Mammoth Lakes, California · 15716 days ago · -2 km deep · 98 km away
  4. 1.88 km W of Mammoth Lakes, California · 15716 days ago · 0 km deep · 97 km away
  5. 1.66 km WSW of Mammoth Lakes, California · 15714 days ago · -2 km deep · 99 km away
  6. 1.79 km SSE of Copperopolis, California · 15703 days ago · 7 km deep · 69 km away
  7. 1.99 km W of Volta, California · 15703 days ago · 6 km deep · 87 km away
  8. 1.76 km WSW of Mammoth Lakes, California · 15697 days ago · -2 km deep · 99 km away
  9. 1.921 km SW of Los Banos, California · 15691 days ago · 0 km deep · 95 km away
  10. 2.05 km WSW of Mammoth Lakes, California · 15689 days ago · 0 km deep · 100 km away
  11. 2.0Central California · 15686 days ago · 7 km deep · 73 km away
  12. 1.917 km ESE of Yosemite Valley, California · 15684 days ago · 18 km deep · 72 km away
  13. 1.91 km ESE of Catheys Valley, California · 15681 days ago · 6 km deep · 5 km away
  14. 2.021 km ESE of Yosemite Valley, California · 15671 days ago · 4 km deep · 73 km away
  15. 2.611 km S of Yosemite Valley, California · 15671 days ago · 3 km deep · 55 km away

Before

  1. 1.87 km WSW of Mammoth Lakes, California · 15737 days ago · 2 km deep · 98 km away
  2. 1.915 km ESE of Yosemite Valley, California · 15748 days ago · 5 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1102871. Read Sun, Oct 4, 2026, 6:04 AM UTC.