A preliminary 3.3 magnitude earthquake struck near Union City Wednesday night, according to the United States Geological Survey.
The quake hit at 6:22 p.m. and was centered 1.5 miles north of Union City, 4.7 miles southeast of Hayward and 5.1 miles north-northwest of Fremont, the USGS said.
No other information was immediately available.
This is a developing story. Details may change as more information becomes available. Stay tuned for updates.
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