SAN FRANCISCO (AP) - Northern California residents on Friday braced for a pair of powerful winter storms that were expected to bring heavy rain, mudslides and flooding over New Year's weekend. Parts of Sonoma and Napa counties north of San Francisco reported light to moderate rain Friday morning, with other areas reporting mostly cloudy conditions, according to the National Weather Service. "It's coming in slowly, but it will move in in buckets later on this afternoon," said Diana Henderson, NWS forecaster based in Monterey. The San Francisco Bay area and counties farther north were likely to bear the brunt of...