Authorities say there've been no reports of damage or injuries after a strong magnitude-7.3 earthquake and a second, magnitude-5.4 temblor struck off the coast of El Salvador.

A tsunami warning had been put into effect shortly after the first tremor struck at 10:37 p.m. Sunday, but it was later rescinded.

The U.S. Geological Survey says the quake was located 86 miles south-southwest of San Miguel, El Salvador. The second quake hit about an hour later.

Also on Sunday, dozens of small to moderate earthquakes struck southeastern California, knocking trailer homes off their foundations and shattering windows in a small farming town east of San Diego.

The USGS says the largest quake registered at a magnitude 5.5 and was centered about three miles northwest of the town of Brawley.

No injuries were reported.