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Quake information: Unconfirmed quake reported: 9.four mi east of San Francisco, California, USA, Eight Could 2021 07:41 GMT

Although our monitoring service initially determined network activity typical of an earthquake, there was no confirmation from a national or international seismological agency. Because of this, it is highly unlikely that it was caused by an earthquake.

May 8, 23:19 UTC: First report: VolcanoDiscovery after 16 hours.

I felt this tremor

I didn’t feel it

Date and time: May 8, 2021 07:41:10 UTC –
Size: unknown
Depth: 10.0 km
Latitude / Longitude of epicenter: 37.81086 ° N / 122.25323 ° W. (California, USA)
Nearest volcano: Clear Lake (137 km)
Primary data source: VolcanoDiscovery

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Data for the same earthquake reported by different authorities

Info: The more agencies report on the same quake and publish similar data, the more confidence you can have in the data. It usually takes up to a few hours for the earthquake parameters to be calculated with near optimal accuracy.

size depth place source
not specified n / A Near San Francisco, California, USA VolcanoDiscovery

User reports for this quake (1)

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0 km southwest of the epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s

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