MORGAN HILL (CBS SF) — A pair of earthquakes — measuring 3.7 and 3.6 in magnitude — rumbled in the hills in Henry Coe State Park Tuesday, jolting residents in nearby Morgan Hill and San Jose awake but causing no immediate report of any damage.

According to the U.S. Geological Survey, the 3.7 temblor struck at 6:58 a.m. with the 3.6 following less than a minute later. Both had an epicenter on the Calaveras Fault about 6 miles northeast of Morgan Hill in the state park and a mile east of Anderson Reservoir’s southern tip.

Residents throughout the South Bay reported feeling the quakes to the USGS.

Matt Coleman felt it in Santa Cruz and took to Twitter posting — “Nothing says good morning like an earthquake!”

Sapna tweeted she felt in South San Jose — “I’m in South San Jose I felt it”

Tammy Lopez also felt the quakes — “Yes I felt it twice in south San Jose.”

The quakes struck on the most seismically active segment of the fault in an area that produced the 6.2 Morgan Hill quake in 1984.

Developing story. More details to come.