California earthquakes

M2.4 earthquake 1km NE of Twain, CA

A magnitude 2.4 earthquake struck 1km NE of Twain, CA on Wed, Jan 20, 2021, 8:39 AM PST (16:39 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.8 19km WSW of Manton, CA. This one was a foreshock.

Quincy 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
2021-01-20 16:39:10 UTC
Depth
6.5 km (4.1 mi), shallow
Epicenter
40.024° N, 121.042° W
Felt reports
2
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.3 km horizontally, 5.1 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
82°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 1.727km ENE of Los Molinos, CA · 2079 days ago · 17 km deep · 66 km away
  2. 1.99km NW of Chester, CA · 2076 days ago · 3 km deep · 44 km away
  3. 2.29km NW of Chester, CA · 2076 days ago · 9 km deep · 44 km away
  4. 1.98km NW of Chester, CA · 2076 days ago · 10 km deep · 42 km away
  5. 1.85km SE of Hamilton City, CA · 2071 days ago · 15 km deep · 87 km away
  6. 1.89km W of Susanville, CA · 2064 days ago · 10 km deep · 49 km away
  7. 2.46km ESE of Red Bluff, CA · 2062 days ago · 32 km deep · 97 km away
  8. 1.83km N of Spring Garden, CA · 2060 days ago · 9 km deep · 23 km away
  9. 2.819km WSW of Manton, CA · 2060 days ago · 15 km deep · 92 km away
  10. 2.06km N of Greenhorn, CA · 2059 days ago · 12 km deep · 27 km away
  11. 1.910km NW of Truckee, CA · 2059 days ago · 11 km deep · 97 km away
  12. 2.39km N of Loma Rica, CA · 2058 days ago · 2 km deep · 77 km away · felt by 8
  13. 1.718km ESE of Anderson, CA · 2055 days ago · 14 km deep · 99 km away
  14. 1.610 km NW of Truckee, California · 2053 days ago · 12 km deep · 97 km away
  15. 2.016km SW of Loyalton, CA · 2053 days ago · 4 km deep · 75 km away
  16. 2.710km SSE of Beckwourth, CA · 2053 days ago · 10 km deep · 67 km away · felt by 6
  17. 2.13km W of Chico, CA · 2052 days ago · 13 km deep · 77 km away
  18. 2.118km WSW of Loyalton, CA · 2052 days ago · 10 km deep · 72 km away
  19. 1.83 km SSE of Sattley, California · 2052 days ago · 15 km deep · 72 km away
  20. 1.712km SE of Mineral, CA · 2051 days ago · 6 km deep · 46 km away
  21. 1.63km S of Canyondam, CA · 2050 days ago · 8 km deep · 14 km away
  22. 1.57km ENE of Mineral, CA · 2049 days ago · 9 km deep · 55 km away
  23. 1.616 km NNW of Truckee, California · 2048 days ago · 7 km deep · 91 km away
  24. 2.08km NNW of Chester, CA · 2044 days ago · 5 km deep · 44 km away
  25. 1.56km NNE of Almanor, CA · 2036 days ago · 8 km deep · 29 km away · felt by 1
  26. 2.64km NNE of Almanor, CA · 2036 days ago · 9 km deep · 28 km away · felt by 5
  27. 1.619km NW of Viola, CA · 2029 days ago · 9 km deep · 96 km away
  28. 1.813km NNE of Shingletown, CA · 2025 days ago · 7 km deep · 91 km away
  29. 1.511km SW of Chester, CA · 2025 days ago · 9 km deep · 35 km away

Before

  1. 2.010km N of Viola, CA · 2082 days ago · 4 km deep · 84 km away
  2. 2.021km NE of Red Bluff, CA · 2082 days ago · 15 km deep · 95 km away
  3. 1.510km N of Viola, CA · 2083 days ago · -1 km deep · 84 km away
  4. 1.812km NNE of Shingletown, CA · 2084 days ago · 6 km deep · 92 km away
  5. 2.010km N of Viola, CA · 2085 days ago · 5 km deep · 84 km away
  6. 2.110km N of Viola, CA · 2085 days ago · 2 km deep · 84 km away
  7. 2.810km N of Viola, CA · 2085 days ago · -2 km deep · 84 km away
  8. 1.54km N of Twain, CA · 2088 days ago · 3 km deep · 3 km away
  9. 2.010km N of Viola, CA · 2091 days ago · 3 km deep · 84 km away
  10. 1.63km NW of Greenville, CA · 2093 days ago · 6 km deep · 16 km away
  11. 1.57km NW of Indian Falls, CA · 2093 days ago · 7 km deep · 7 km away
  12. 1.66 km NNW of Verdi, California · 2099 days ago · 8 km deep · 99 km away
  13. 2.711km NW of Verdi-Mogul, NV · 2099 days ago · 3 km deep · 98 km away · felt by 6
  14. 1.64km NNE of Almanor, CA · 2101 days ago · 7 km deep · 26 km away
  15. 1.67 km NNW of Verdi, California · 2104 days ago · 15 km deep · 98 km away
  16. 2.55km NNE of East Quincy, CA · 2104 days ago · 3 km deep · 15 km away
  17. 1.63km ENE of Prattville, CA · 2105 days ago · 7 km deep · 23 km away
  18. 1.57 km NNW of Verdi, California · 2105 days ago · 14 km deep · 98 km away
  19. 1.57 km NNW of Verdi, California · 2106 days ago · 15 km deep · 98 km away
  20. 1.98km WNW of Caribou, CA · 2107 days ago · 2 km deep · 19 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73513880. Read Sat, Oct 3, 2026, 8:17 AM UTC.