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Quake data: Reported (unconfirmed) earthquake: 0.5 mi west of San Francisco, California, USA, 1 Might 2021 08:40 GMT

Quake status: very uncertain

It is assumed that this recording did not come from an actual earthquake as there is no officially confirmed quake that exactly matches the user reports we received of the reported event.
In most cases, this event likely reflects something else that caused the tremors, such as B. an explosion (typical of mining areas), a sonic boom, traffic, weather, or some other human or natural cause.
The first report is below:

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 1st 08:46 UTC: First report: VolcanoDiscovery after 7 minutes.

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Even if you did NOT feel the quake even though you were in the area, please Report it! Your contribution is also useful for earthquake research and for earthquake hazard analysis and mitigation. You can use your device’s location or the map to tell you where you were during the earthquake. Many Thanks!

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.

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User reports for this quake (1)

Leave a comment if you find a particular report interesting or want to add to it.
Report as inappropriate.

94102 (0 km northeast of the epicenter) [Map] / Shake gently (MMI IV) / 20-30 s

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