Minor mag. 1.5 earthquake - 3km S of Diamond Bar, CA, on Friday, Jan 21, 2022 at 4:56 am (GMT -8) -


Minor magnitude 1.5 earthquake at 16 km depth
21 Jan 13:00 UTC: First to report: USGS after 4 minutes.
Local time at epicenter: Friday, Jan 21, 2022 at 4:56 am (GMT -8)
Magnitude: 1.5
Depth: 16.4 km
Epicenter latitude / longitude: 33.99767°N / 117.81116°W

Antipode: 33.998°S / 62.189°E
Nearest volcano: Lavic Lake (137 km / 85 mi)
Nearby towns and cities:
3 km (2 mi) S of Diamond Bar (pop: 56,900) --> See nearby quakes!
5 km (3 mi) W of Chino Hills (pop: 78,300) --> See nearby quakes!
6 km (3 mi) ESE of Walnut (pop: 30,200) --> See nearby quakes!
8 km (5 mi) SW of Pomona (pop: 153,300) --> See nearby quakes!
9 km (6 mi) ENE of Rowland Heights (pop: 49,000) --> See nearby quakes!
11 km (7 mi) W of Chino (pop: 85,600) --> See nearby quakes!
12 km (8 mi) N of Yorba Linda (pop: 68,000) --> See nearby quakes!
14 km (9 mi) ESE of West Covina (pop: 108,500) --> See nearby quakes!
20 km (13 mi) NNE of Anaheim (pop: 350,700) --> See nearby quakes!
28 km (17 mi) NNE of Garden Grove (pop: 175,400) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
11.2°C (52 F), humidity: 37%, wind: 0 m/s (0 kts)
Primary data source: USGS (United States Geological Survey)
Clear Sky

Estimated released energy: 1.1 x 107 joules (3.12 kilowatt hours) | about seismic energy
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag. | Depth | Location | Source |
1.5 | 16 km | 3km S of Diamond Bar, CA | USGS |
1.5 | 16 km | Southern California | RaspberryShake |
Earlier earthquakes in the same area
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