Event status: uncertain, preliminary [?]

Unconfirmed earthquake or seismic-like event: 10.1 mi northwest of Rancho Cucamonga, San Bernardino County, California, USA, Sunday, June, 27 2021 10:18 GMT -

Unconfirmed earthquake or seismic-like event: 10.1 mi northwest of Rancho Cucamonga, San Bernardino County, California, USA, Sunday, June, 27 2021 10:18 GMT
27 Jun 10:20 UTC: First to report: VolcanoDiscovery after 2 minutes.
Date & time: Jun 27, 2021 10:18:18 UTC -
Magnitude: unknown
Depth: 10.0 km
Epicenter latitude / longitude: 34.22382°N / 117.69866°W (San Bernardino, California, United States)
Antipode: 34.224°S / 62.301°E
Nearest volcano: Lavic Lake (115 km / 71 mi)
Nearby towns and cities:
9 km (5 mi) NNW of San Antonio Heights (San Bernardino County) (pop: 3,370) --> See nearby quakes!
14 km (9 mi) N of Claremont (Los Angeles County) (pop: 36,300) --> See nearby quakes!
15 km (9 mi) NNW of Upland (pop: 76,400) --> See nearby quakes!
16 km (10 mi) NW of Rancho Cucamonga (pop: 175,200) --> See nearby quakes!
18 km (11 mi) ENE of Glendora (pop: 52,000) --> See nearby quakes!
18 km (11 mi) NNW of Ontario (pop: 171,200) --> See nearby quakes!
19 km (12 mi) NNE of Pomona (pop: 153,300) --> See nearby quakes!
24 km (15 mi) N of Chino (pop: 85,600) --> See nearby quakes!
41 km (25 mi) NW of Riverside (pop: 322,400) --> See nearby quakes!
592 km (368 mi) SE of Sacramento (pop: 490,700) --> See nearby quakes!
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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near Wrightwood, San Bernardino, California (13.2 km NNW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s : A single jerk  
Palmdale / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Rattling  
Sleeping (45.7 km SSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s
Redlands CA / Light shaking (MMI IV) / rattling, vibrating / 20-30 s : At about 315 am pst, I felt my bed vibrating and my ceiling fan shaking. Lasted less than one minute.  
Monrovia ca / Very weak shaking (MMI II) / single lateral shake / very short
Redlands CA / Light shaking (MMI IV) / rattling, vibrating / 20-30 s : At about 315 am pst, I felt my bed vibrating and my ceiling fan shaking. Lasted less than one minute.  
Fresno (337 km NW of epicenter) [Map] / Very weak shaking (MMI II) / 2-5 s : Barely felt anything at all  
Upland, Ca (13.2 km SSE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s
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