A moderate earthquake struck in Northern California but authorities say there are no reports of any problems.

The U.S. Geological Survey says the magnitude-5.1 temblor hit at 12:05 a.m. Friday and was centered 25 miles northwest of Redding, in neighboring Trinity County.

Both the Shasta County and the Trinity County sheriff's offices say they were advised of the temblor, but they had no reports of damage or of people feeling it.

A quake of that magnitude is capable of causing considerable damage under some circumstances.