Two small earthquakes rattled Southern California Sunday morning — one originating near the Salton Sea and another coming from Mexicali.
A magnitude-3.0 earthquake was recorded on the southeastern shore of the Salton Sea at 1:56 a.m. Sunday, according to the U.S. Geological Survey.
The quake, strong enough to be felt but not to cause structural damage, was centered about a mile south southwest of Obsidian Butte, near the Salton Sea National Wildlife Refuge, according to the USGS.
A magnitude 3.3 aftershock struck the Imperial Valley and eastern San Diego County, according to USGS.
The aftershock was centered about 28 miles south-southeast of Mexicali, or about 120 miles east of San Diego. It hit at 9:07 a.m.
Thousands of similarly-sized aftershocks have rattled the area since a magnitude 7.2 earthquake struck on April 2, 2010, killing two people in Mexicali and severely damaging canals, schools and older buildings in Imperial County.