Unconfirmed seismic-like event reported: 22 mi west of Eastvale, Riverside County, California, USA, 21 May 2021 08:25 GMT -

Our monitoring service AllQuakes received reports of shaking caused by a seismic-like event, possibly an earthquake, in or near Near Santa Ana, California, USA at around 08:25 GMT. Unless confirmed by at least one national or international seismological agency, its status as possible earthquake remains unconfirmed. This may or may not turn out to be an actual naturally occurring quake.
Unconfirmed seismic-like event reported: 22 mi west of Eastvale, Riverside County, California, USA, 21 May 2021 08:25 GMT
21 May 08:19 UTC: First to report: VolcanoDiscovery after 30 seconds.
Date & time: 21 May 2021 08:25:44 UTC -
Magnitude: unknown
Depth: 10.0 km
Epicenter latitude / longitude: 33.90428°N / 117.94338°W (Riverside, California, United States)
Nearest volcano: Lavic Lake (120 km / 75 mi)
Primary data source: VolcanoDiscovery
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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
unknownn/aNear Santa Ana, California, USAVolcanoDiscovery

User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Torrance (37 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : Shaking. In bed.  
Valley village / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s
Valley village / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s
Eastvale, ca (36.9 km ENE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
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