daylight saving time begins with a jolt...

At 7:47 PDT this morning I was lying in bed trying to sleep when I was jolted. I live very close to an on-ramp to Interstate 280 and it is common for large trucks to drive by in the mornings getting to the freeway, these large trucks can cause my building to shake. This morning it was a jolt, not a shake...I knew immediately it was an earthquake. I waited for another jolt but nothing ever followed. This was a minor 3.5 magnitude earthquake.