Minor mag. 1.8 earthquake - Sonoma County, 4.6 mi west of Cobb, California, USA, on Sunday, 29 Nov 2020 1:27 pm (GMT -8) -
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Minor magnitude 1.8 earthquake at 1 km depth
29 Nov 21:29 UTC: First to report: USGS after 2 minutes.
Date & time: 29 Nov 2020 21:27:26 UTC -
Local time at epicenter: Sunday, 29 Nov 2020 1:27 pm (GMT -8)
Magnitude: 1.8
Depth: 0.9 km
Epicenter latitude / longitude: 38.813°N / 122.8075°W

Nearest volcano: Clear Lake (18 km / 11 mi)
Nearby towns and cities:
7 km (5 mi) W of Cobb (pop: 1,780) --> See nearby quakes!
18 km (11 mi) E of Cloverdale (Sonoma County) (pop: 8,810) --> See nearby quakes!
22 km (13 mi) W of Hidden Valley Lake (pop: 5,580) --> See nearby quakes!
23 km (14 mi) SW of Clearlake (Lake County) (pop: 15,200) --> See nearby quakes!
23 km (14 mi) NNE of Healdsburg (Sonoma County) (pop: 11,700) --> See nearby quakes!
23 km (14 mi) NNE of Russian River (pop: 11,700) --> See nearby quakes!
23 km (14 mi) NNE of Russian River (pop: 11,700) --> See nearby quakes!
30 km (18 mi) N of Windsor (Sonoma County) (pop: 27,500) --> See nearby quakes!
42 km (26 mi) NNW of Santa Rosa (pop: 175,000) --> See nearby quakes!
117 km (73 mi) WNW of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
18.5°C (65 F), humidity: 32%, wind: 0 m/s (1 kts) from NNW
Primary data source: USGS (United States Geological Survey)Scattered Clouds

Estimated released energy: 3.2 x 107 joules (8.78 kilowatt hours) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Magnitude | Depth | Location | Source |
M 1.8 | 0.9 km | 6km NW of The Geysers, CA, USA | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
At magnitude 1.8, this quake was too small to be felt by humans, but it was recorded instrumentally.