This record is considered not to be from an actual earthquake. It could be due to some other (unkown) event causing shaking, such as weather, sonic booms. In other cases, officially reported quakes are sometimes removed again later.
This can happen if initial automatic calculations return an earthquake, but turn out to be wrong during subsequent (manual) revision.
The initial report is below:
Our monitoring service AllQuakes received reports of an earthquake in or near Near San Diego, California, USA at around 12:22 GMT. Unless confirmed by at least one national or international seismological agency, its status remains unconfirmed.
18 Apr 12:29 UTC: First to report: VolcanoDiscovery after 6 minutes.
I felt this quake
I didn’t feel it
Date & time: 18 Apr 2021 12:22:58 UTC –
Depth: 10.0 km
Epicenter latitude / longitude: 32.79435°N / 117.23039°W (California, United States)
Nearest volcano: Salton Buttes (157 km / 98 mi)
Primary data source: VolcanoDiscovery
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!
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.
User reports for this quake (2)
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Encinitas / Light shaking (MMI IV) / single lateral shake / 1-2 s : I was awake in bed at around 4am and felt a single wave shake
0 km WNW of epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating / 30-60 s : Apartment building shaking/tremor
Earlier earthquakes in the same area
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