Minor mag. 1.8 earthquake - 1km NE of San Ramon, CA, on Friday, Dec 3, 2021 11:25 pm (GMT -8) -

Minor mag. 1.8 earthquake - 1km NE of San Ramon, CA, on Friday, Dec 3, 2021 11:25 pm (GMT -8)

Minor magnitude 1.8 earthquake at 9 km depth

4 Dec 07:27 UTC: First to report: USGS after 2 minutes.
Date & time: Dec 4, 2021 07:25:14 UTC -
Local time at epicenter: Friday, Dec 3, 2021 11:25 pm (GMT -8)
Magnitude: 1.8
Depth: 8.8 km
Epicenter latitude / longitude: 37.78783°N / 121.96917°W (California, United States)
Antipode: 37.788°S / 58.031°E
Nearest volcano: Clear Lake (149 km / 93 mi)
Nearby towns and cities:
1 km (1 mi) NE of San Ramon (pop: 76,100) --> See nearby quakes!
5 km (3 mi) SE of Danville (pop: 44,400) --> See nearby quakes!
10 km (6 mi) NNW of Dublin (pop: 57,700) --> See nearby quakes!
15 km (9 mi) NE of Castro Valley (pop: 61,400) --> See nearby quakes!
16 km (10 mi) SSE of Walnut Creek (pop: 68,900) --> See nearby quakes!
16 km (10 mi) NNW of Pleasanton (pop: 79,500) --> See nearby quakes!
16 km (10 mi) NE of Hayward (pop: 158,300) --> See nearby quakes!
18 km (11 mi) ENE of San Leandro (pop: 90,700) --> See nearby quakes!
40 km (25 mi) E of San Francisco (pop: 864,800) --> See nearby quakes!
50 km (31 mi) N of San Jose (pop: 1,026,900) --> See nearby quakes!
Weather at epicenter at time of quake:
Mist 10.8°C (51 F), humidity: 89%, wind: 1 m/s (2 kts) from WSW
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.2 x 107 joules (8.78 kilowatt hours) | about seismic energy
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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.
1.88.8 km1km NE of San Ramon, CAUSGS
1.88.8 kmCentral CaliforniaRaspberryShake

User reports for this quake (1)

At magnitude 1.8, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Tustin CA / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : Slight rolling  
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