Event status: uncertain, preliminary [?]

Unconfirmed earthquake or seismic-like event: Orange County, 7.6 mi west of Corona, Riverside County, California, USA, Sep 24, 2021 8:58 pm (GMT -7) -

Unconfirmed earthquake or seismic-like event: Orange County, 7.6 mi west of Corona, Riverside County, California, USA, Sep 24, 2021 8:58 pm (GMT -7)
25 Sep 04:17 UTC: First to report: VolcanoDiscovery after 19 minutes.
Date & time: Sep 25, 2021 03:58:04 UTC -
Local time at epicenter: Friday, Sep 24, 2021 8:58 pm (GMT -7)
Magnitude: 3.8?
Depth: 10.0 km
Epicenter latitude / longitude: 33.9039°N / 117.69413°W (Orange, California, United States)
Antipode: 33.904°S / 62.306°E
Nearest volcano: Lavic Lake (172 km / 107 mi)
Nearby towns and cities:
8 km (5 mi) S of Los Serranos (pop: 7,100) --> See nearby quakes!
11 km (7 mi) E of Yorba Linda (pop: 68,000) --> See nearby quakes!
12 km (7 mi) SSE of Chino Hills (pop: 78,300) --> See nearby quakes!
12 km (7 mi) SSE of Chino Hills (pop: 78,300) --> See nearby quakes!
12 km (8 mi) WNW of Corona (pop: 164,200) --> See nearby quakes!
18 km (11 mi) SSE of Pomona (pop: 153,300) --> See nearby quakes!
18 km (11 mi) SSW of Ontario (pop: 171,200) --> See nearby quakes!
20 km (12 mi) NE of Orange (pop: 141,000) --> See nearby quakes!
48 km (30 mi) ENE of Long Beach (pop: 474,100) --> See nearby quakes!
622 km (386 mi) SE of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 19.5°C (67 F), humidity: 77%, wind: 0 m/s (1 kts) from W
Primary data source: VolcanoDiscovery
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User reports for this quake (8)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Highgrove, Riverside, California (34.7 km ENE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
Riverside CA (144.2 km E of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Light shaking.  
Walnut ca / Very weak shaking (MMI II) / rattling, vibrating / very short (reported through our app)
Long Beach (40.2 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 10-15 s : It was quite suddle  
Long Beach (40.2 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 10-15 s : It was quite suddle  
long beach (48.6 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / very short : it felt like a little roll and the walls creaked a lil bit  
Los Angeles / Very weak shaking (MMI II) / single vertical bump / 1-2 s
Long Beach (40.2 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 10-15 s : It was quite suddle  
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