NEAR BRAWLEY (CBSLA.com) —A swarm of earthquakes continued to rattle parts of Imperial County Sunday.

The largest reported by the U.S. Geological Survey at 12:31 p.m. had a preliminary magnitude of 5.5.

Its epicenter was three miles north-northwest of Brawley and four miles east-southwest of Westmorland.

Some buildings were evacuated Sunday as a precaution.

By 11 p.m. Sunday, more than 200 quakes had been reported in the area. As reported on the USGS website most have ranged in magnitude from 2.5 to 4.1.

City News Service reports that the city of Brawley is a small farming town. It is about 200-plus miles from Los Angeles.

Some of the quakes were felt as far as Arizona.

Reporting for CBS2 and KCAL9, Amanda Burden spoke to seismologists who say this quake activity should remind LA residents to have earthquake kits ready in case the big one strikes.