Felt slight roll in the garage in Black Hawk.

Just one minor jolt

I felt a quick shake.

Felt in contra Costa County

Heard then felt shaking

Heard the building move and felt tiny shake

3rd floor, Heritage District, heard small "crack" noise, looked at windows to see if curtains blowing as that is what usually causes that sound. No wind and just wondered of quake, then alert popped up. Dogs and cat did.not react.