Light mag. 2.7 earthquake - Sonoma County, 14 mi southwest of Clearlake, Lake County, California, USA, on Saturday, 27 Feb 2021 8:43 pm (GMT -8) -
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Light magnitude 2.7 earthquake at 1 km depth
28 Feb 04:46 UTC: First to report: USGS after 2 minutes.
Date & time: 28 Feb 2021 04:43:40 UTC -
Local time at epicenter: Saturday, 27 Feb 2021 8:43 pm (GMT -8)
Magnitude: 2.7
Depth: 1.0 km
Epicenter latitude / longitude: 38.79033°N / 122.767°W

Nearest volcano: Clear Lake (20 km / 12 mi)
Nearby towns and cities:
5 km (3 mi) SW of Cobb (pop: 1,780) --> See nearby quakes!
18 km (11 mi) W of Hidden Valley Lake (pop: 5,580) --> See nearby quakes!
22 km (14 mi) E of Cloverdale (Sonoma County) (pop: 8,810) --> See nearby quakes!
22 km (14 mi) NNE of Healdsburg (Sonoma County) (pop: 11,700) --> See nearby quakes!
22 km (14 mi) NNE of Russian River (pop: 11,700) --> See nearby quakes!
22 km (14 mi) SSW of Clearlake (Lake County) (pop: 15,200) --> See nearby quakes!
27 km (17 mi) N of Windsor (Sonoma County) (pop: 27,500) --> See nearby quakes!
39 km (24 mi) N of Santa Rosa (pop: 175,000) --> See nearby quakes!
50 km (31 mi) N of Rohnert Park (pop: 42,400) --> See nearby quakes!
113 km (70 mi) WNW of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
7°C (45 F), humidity: 65%, wind: 2 m/s (4 kts) from WNW
Primary data source: USGS (United States Geological Survey)Clear Sky

Estimated released energy: 7.1 x 108 joules (197 kilowatt hours, equivalent to 0.169 tons of TNT) 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 |
2.7 | 1 km | 2km NNW of The Geysers, CA, USA | USGS |
2.7 | 1 km | NORTHERN CALIFORNIA, USA | EMSC |
User reports for this quake (1)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
At magnitude 2.7, this quake might have been felt very close to the epicenter and under calm conditions.