Light mag. 2.8 earthquake - 9.8 mi southeast of Livermore, Alameda County, California, USA, on Saturday, Oct 16, 2021 7:55 pm (GMT -7) -

Light mag. 2.8 earthquake - 9.8 mi southeast of Livermore, Alameda County, California, USA, on Saturday, Oct 16, 2021 7:55 pm (GMT -7)

Light magnitude 2.8 earthquake at 3 km depth

17 Oct 02:58 UTC: First to report: EMSC after 3 minutes.
17 Oct 02:58: Now using data updates from USGS
Date & time: Oct 17, 2021 02:55:02 UTC -
Local time at epicenter: Saturday, Oct 16, 2021 7:55 pm (GMT -7)
Magnitude: 2.8
Depth: 3.1 km
Epicenter latitude / longitude: 37.5505°N / 121.70067°W (Alameda, California, United States)
Antipode: 37.551°S / 58.299°E
Nearest volcano: Clear Lake (183 km / 114 mi)
Nearby towns and cities:
16 km (10 mi) SSE of Livermore (pop: 88,100) --> See nearby quakes!
20 km (12 mi) SE of Pleasanton (pop: 79,500) --> See nearby quakes!
23 km (14 mi) NE of Milpitas (pop: 77,600) --> See nearby quakes!
23 km (15 mi) NNE of Alum Rock (pop: 15,500) --> See nearby quakes!
25 km (16 mi) E of Fremont (pop: 232,200) --> See nearby quakes!
27 km (17 mi) SE of Dublin (pop: 57,700) --> See nearby quakes!
29 km (18 mi) E of Union City (pop: 74,500) --> See nearby quakes!
29 km (18 mi) NE of San Jose (pop: 1,026,900) --> See nearby quakes!
31 km (19 mi) NE of Santa Clara (pop: 126,200) --> See nearby quakes!
116 km (72 mi) S of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Few Clouds 16.4°C (61 F), humidity: 33%, wind: 1 m/s (3 kts) from S
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1 x 109 joules (278 kilowatt hours, equivalent to 0.239 tons of TNT) More info
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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.
Mag.DepthLocationSource
2.83.1 km16km SSE of Livermore, CAUSGS
2.83 kmNORTHERN CALIFORNIAEMSC

User reports for this quake (2)

At magnitude 2.8, this quake might have been felt very close to the epicenter and under calm conditions.
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Livermore, Alameda, California (14.9 km NNW of epicenter) [Map] / Very weak shaking (MMI II) : i didnt feel it but my whole family did :(( east-west shaking, my sister felt it really well on the second floor as if someone pushed really hard on the house | One user found this interesting.  
San Francisco CA / Very weak shaking (MMI II) / 1-2 s : Heard loud boom and felt a 1-2 second shake. My little chihuahua started shaking  
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