California earthquakes

M1.9 earthquake 16km NW of Biggs, CA

A magnitude 1.9 earthquake struck 16km NW of Biggs, CA on Thu, Dec 10, 2020, 8:18 PM PST (04:18 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M3.9 15km E of Willows, CA. This one was a foreshock.

Biggs 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2020-12-11 04:18:03 UTC
Depth
20.4 km (12.7 mi), shallow
Epicenter
39.494° N, 121.867° 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 0.4 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.25
Depth from
From location
Station coverage gap
66°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.98km WNW of Caribou, CA · 2108 days ago · 2 km deep · 86 km away
  2. 3.915km E of Willows, CA · 2107 days ago · 26 km deep · 13 km away · felt by 624
  3. 2.216km E of Willows, CA · 2107 days ago · 24 km deep · 13 km away · felt by 45
  4. 1.57km NW of Indian Falls, CA · 2095 days ago · 7 km deep · 96 km away
  5. 1.54km N of Twain, CA · 2089 days ago · 3 km deep · 94 km away
  6. 2.021km NE of Red Bluff, CA · 2084 days ago · 15 km deep · 95 km away
  7. 2.41km NE of Twain, CA · 2083 days ago · 7 km deep · 92 km away · felt by 2
  8. 1.77km NE of Lower Lake, CA · 2082 days ago · 0 km deep · 84 km away · felt by 1
  9. 1.727km ENE of Los Molinos, CA · 2080 days ago · 17 km deep · 69 km away
  10. 1.96km NNE of Lake Pillsbury, CA · 2080 days ago · 10 km deep · 92 km away
  11. 1.717km NNE of Nice, CA · 2078 days ago · 12 km deep · 80 km away
  12. 2.318km NNE of Nice, CA · 2077 days ago · 11 km deep · 79 km away · felt by 1
  13. 2.03km NW of Lower Lake, CA · 2077 days ago · 5 km deep · 91 km away · felt by 1
  14. 2.06km NNE of Lake Pillsbury, CA · 2073 days ago · 5 km deep · 92 km away
  15. 1.85km SE of Hamilton City, CA · 2073 days ago · 15 km deep · 26 km away
  16. 2.614km SSE of Willows, CA · 2072 days ago · 26 km deep · 24 km away · felt by 10
  17. 2.46km ESE of Red Bluff, CA · 2064 days ago · 32 km deep · 78 km away

Before

  1. 1.713km N of Lake Pillsbury, CA · 2124 days ago · 8 km deep · 94 km away
  2. 2.020km SSW of Manton, CA · 2125 days ago · 12 km deep · 85 km away
  3. 1.82km SSW of Canyondam, CA · 2130 days ago · 2 km deep · 99 km away
  4. 2.16km NW of Lake Pillsbury, CA · 2134 days ago · 9 km deep · 98 km away
  5. 1.618km NE of Upper Lake, CA · 2143 days ago · 10 km deep · 80 km away
  6. 1.97km SE of Lower Lake, CA · 2151 days ago · 7 km deep · 90 km away
  7. 1.77km NNW of Belden, CA · 2152 days ago · -2 km deep · 81 km away
  8. 1.816km E of Willows, CA · 2153 days ago · 16 km deep · 13 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73496305. Read Sun, Oct 4, 2026, 4:27 PM UTC.