Event status: uncertain, preliminary [?]

Unconfirmed earthquake or seismic-like event: 1.8 mi south of Whittier, Los Angeles County, California, USA, Sep 17, 2021 9:34 pm (GMT -7) -

Unconfirmed earthquake or seismic-like event: 1.8 mi south of Whittier, Los Angeles County, California, USA, Sep 17, 2021 9:34 pm (GMT -7)
18 Sep 04:36 UTC: First to report: VolcanoDiscovery after 2 minutes.
Date & time: Sep 18, 2021 04:34:48 UTC -
Local time at epicenter: Friday, Sep 17, 2021 9:34 pm (GMT -7)
Magnitude: 3.8?
Depth: 10.0 km
Epicenter latitude / longitude: 33.95442°N / 118.0243°W (Los Angeles, California, United States)
Antipode: 33.954°S / 61.976°E
Nearest volcano: Lavic Lake (156 km / 97 mi)
Nearby towns and cities:
1 km (1 mi) ENE of South Whittier (pop: 57,200) --> See nearby quakes!
3 km (2 mi) SSE of Whittier (pop: 87,400) --> See nearby quakes!
4 km (3 mi) NNW of La Mirada (pop: 49,500) --> See nearby quakes!
7 km (5 mi) ESE of Pico Rivera (pop: 64,200) --> See nearby quakes!
8 km (5 mi) NE of Norwalk (pop: 107,100) --> See nearby quakes!
10 km (6 mi) NNW of Buena Park (pop: 83,300) --> See nearby quakes!
10 km (6 mi) E of Downey (pop: 114,200) --> See nearby quakes!
13 km (8 mi) S of El Monte (pop: 116,700) --> See nearby quakes!
23 km (14 mi) ESE of Los Angeles (pop: 3,971,900) --> See nearby quakes!
601 km (374 mi) SSE of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 16.9°C (62 F), humidity: 71%, wind: 1 m/s (2 kts) from W
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 (8)

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!
Belmont Heights, Long Beach / Light shaking (MMI IV) / vibration and rolling : Definitely felt it but was not violent. Probably seemed longer than. It was. Nothing fell or broke. I was in Belmont Heights in Long Beach, CA. | One user found this interesting.  
Indiana Colony, Los Angeles, California (24.8 km NNW of epicenter) [Map] / Light shaking (MMI IV) : The doors sounds moving, the windows shake and I feel in my feet’s  
California (25 km W of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s (reported through our app)
Los angeles (23.5 km W of epicenter) [Map] / Weak shaking (MMI III) / complex motion difficult to describe / 20-30 s
Manhattan beach / Moderate shaking (MMI V) / complex motion difficult to describe / 30-60 s
Redondo brach / Light shaking (MMI IV) / complex motion difficult to describe / 2-5 s
Oxnard / not felt
Shelter Cove ca / Very weak shaking (MMI II) / rattling, vibrating / very short
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.