TRUCKEE (AP) — A storm that brought two feet of snow to parts of the northern Sierra Nevada and sparked a tornado moved Friday to Southern California, where it was expected to bring high winds.The storm system dumped more than 20 inches of snow on parts the northern Sierra between Thursday and Friday morning, according to the National Weather Service. The snowfall created whiteout conditions that briefly closed a major route to Lake Tahoe, but was a boon to skiers at Tahoe resorts, which have been getting steady snowfall for the past week or so.“It’s a day and night difference from a year ago,” said Kevin Cooper, spokesman for the Kirkwood and Heavenly resorts. “I cannot remember a Christmas Day like I just had this morning.”The precipitation was also a boon for the state’s reservoirs.