SACRAMENTO, Calif. — The hazardous weather bearing down on Northern California has flooded overwhelmed rivers and creeks, toppled trees and knocked out power to a storm-weary region. It also could be a short-term drought buster. Following a wet and windy weekend, the region is facing yet another wave of extreme storms. Heavy rain and wind are forecast at least through Tuesday, with showers, Sierra snow and flooding concerns persisting throughout the week. “The conga-line of atmospheric rivers along the Pacific jet stream is likely to continue for the next week or two,” John Abatzoglou, a clima...