Minor magnitude 1.7 earthquake at 6 km depth
4 Apr 02:43 UTC: First to report: USGS after 2 minutes.
4 Apr 02:46: Hypocenter depth recalculated from 3.4 to 5.9 km (from 2.1 to 3.7 mi).
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Date & time: 4 Apr 2021 02:41:23 UTC –
Local time at epicenter: Saturday, 3 Apr 2021 7:41 pm (GMT -7)
Magnitude: 1.7
Depth: 5.9 km
Epicenter latitude / longitude: 34.29417°N / 117.0755°W 
(California, United States)
Nearest volcano: Lavic Lake (65 km / 40 mi)
Nearby towns and cities:
10 km (6 mi) NNE of Running Springs (pop: 4,860) –> See nearby quakes!
12 km (7 mi) ENE of Lake Arrowhead (San Bernardino County) (pop: 12,400) –> See nearby quakes!
22 km (14 mi) NNE of Highland (pop: 54,900) –> See nearby quakes!
25 km (16 mi) SSE of Apple Valley (pop: 72,200) –> See nearby quakes!
25 km (16 mi) SE of Hesperia (pop: 93,300) –> See nearby quakes!
28 km (18 mi) NNE of Redlands (pop: 71,000) –> See nearby quakes!
29 km (18 mi) NE of San Bernardino (pop: 216,100) –> See nearby quakes!
29 km (18 mi) N of Yucaipa (pop: 53,300) –> See nearby quakes!
48 km (30 mi) NE of Riverside (pop: 322,400) –> See nearby quakes!
95 km (59 mi) NE of Santa Ana (pop: 335,400) –> See nearby quakes!
Clear Sky
12.5°C (55 F), humidity: 20%, wind: 2 m/s (4 kts) from SPrimary data source: USGS (United States Geological Survey)
Estimated released energy: 2.2 x 107 joules (6.22 kilowatt hours) More info
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