4.6 Earthquake Jolts Northern California

An earthquake of magnitude 4.6 in Northern California has awakened residents with a jolt. Many say they felt their homes shake for a few seconds early Thursday across a 100-mile stretch, including San Francisco. The U.S. Geological Survey reports the earthquake was centered a mile from Boulder Creek in the Santa Cruz Mountains at about 1:40 a.m. There are no immediate reports of serious damage. Residents as far north as Petaluma also felt it. In February, a series of small earthquakes rattled the San Francisco Bay Area, with the most powerful being a magnitude 4.2.