California quake downgraded to magnitude-6.8

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EUREKA, Calif. (AP) -- An earthquake that struck offshore and rattled the Northern California coast has been downgraded to a magnitude-6.8.

The quake about 50 miles west of Eureka on Sunday night was initially reported as a magnitude-6.9. It was felt widely across the region and across the Oregon border, but there were no reports of injuries or damage.

The quake had produced 20 aftershocks of magnitude-3.5 or larger by late Monday morning, and more were expected over the coming days.