Event status: disregarded [?]

Reported seismic-like event (likely no quake): 4.7 mi southeast of Fremont, Alameda County, California, USA, Oct 12, 2021 11:20 am (GMT -7) -

Reported seismic-like event (likely no quake): 4.7 mi southeast of Fremont, Alameda County, California, USA, Oct 12, 2021 11:20 am (GMT -7)
12 Oct 18:22 UTC: First to report: VolcanoDiscovery after 2 minutes.
Date & time: Oct 12, 2021 18:20:00 UTC -
Local time at epicenter: Tuesday, Oct 12, 2021 11:20 am (GMT -7)
Magnitude: 3?
Depth: 10.0 km
Epicenter latitude / longitude: 37.51093°N / 121.91768°W (Alameda, California, United States)
Antipode: 37.511°S / 58.082°E
Nearest volcano: Clear Lake (179 km / 111 mi)
Nearby towns and cities:
8 km (5 mi) ESE of Fremont (pop: 232,200) --> See nearby quakes!
9 km (6 mi) N of Milpitas (pop: 77,600) --> See nearby quakes!
11 km (7 mi) E of Newark (pop: 45,300) --> See nearby quakes!
13 km (8 mi) SE of Union City (pop: 74,500) --> See nearby quakes!
17 km (11 mi) SSW of Pleasanton (pop: 79,500) --> See nearby quakes!
18 km (11 mi) N of Santa Clara (pop: 126,200) --> See nearby quakes!
19 km (12 mi) NNE of seonibeil (pop: 151,800) --> See nearby quakes!
19 km (12 mi) N of San Jose (pop: 1,026,900) --> See nearby quakes!
23 km (14 mi) SE of Hayward (pop: 158,300) --> See nearby quakes!
125 km (77 mi) SSW of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 16.8°C (62 F), humidity: 23%, wind: 4 m/s (7 kts) from NNW
Primary data source: VolcanoDiscovery
Show interactive Map
[smaller] [bigger]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Fremont, Alameda, California (0 km N of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short : sitting on ground floor and floorboard started to rattle. Might have been from strong winds but not sure  
Phelan, CA / Moderate shaking (MMI V) / single lateral shake / 2-5 s : Standing in kitchen, heard rattling of doors and then a big strong jolt  
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.