6 earthquakes rattle Northern California on Thursday

A single quake of 2.8 magnitude shook Mammoth Lakes, Calif. at 7:35 a.m. on Thursday, Sept. 14. A single quake of 2.8 magnitude shook Mammoth Lakes, Calif. at 7:35 a.m. on Thursday, Sept. 14. Photo: USGS Photo: USGS Image 1 of / 3 Caption Close 6 earthquakes rattle Northern California on Thursday 1 / 3 Back to Gallery

UPDATE: The United States Geological Survey reports a preliminary magnitude 2.8 earthquake struck near East Foothills on Thursday.

The quake hit at 8:59 PM local time at a depth of 0 kilometers.

This was followed by another 2.6-magnitude temblor at 10:19 p.m., also near East Foothills, according to the USGS.

-----

A quartet of small earthquakes shook Northern California on Thursday, including three rattlers about 9 miles northeast of San Jose, the U.S. Geological Survey said.

The first quake struck at 10:32 a.m. about 2 miles north of East Foothills at a magnitude of 3.3. Two hours later, a second quake roared from the same epicenter with a 2.6 magnitude, followed by yet another shaker 2 miles north of East Foothills at 6:17 p.m. The last quake shook with a 3.4 magnitude.

There were no reports of damage.

Further east, at 7:35 a.m., a 2.8-magnitude quake struck about 15 miles southeast of Mammoth Lakes.

Dozens of folks in San Jose took to Twitter on Thursday night to confirm the shaking.

Sonia Orban-Price tweeted, "Nothing like a small earthquake to get the heart racing." Not to mention two or three.

Read Michelle Robertson’s latest stories and send her news tips at mrobertson@sfchronicle.com.