Snowfall totals in the Pacific Northwest, the Northern Rockies, the Great Basin and California would range from between 12 and 24 inches, the weather service said, with the Sierra Nevada seeing the "heaviest snowfall."A stretch of California Highway 89 also was closed due to heavy snow between Tahoe City and South Lake Tahoe, California, the highway patrol said.Heavy rain was forecast through the weekend from San Francisco to the Sierra crest with up to 2 inches in the Bay Area and up to 5 inches at Grass Valley northeast of Sacramento.CBS San Francisco reported that in Golden Gate Park, a massive redwood tree fell, forcing organizers to alter the race course at the National Club Cross County Championships.The NWS Weather Prediction Center reported that "blizzard conditions" were possible for parts of South Dakota Tuesday and Wednesday, adding that "travel may be impossible.""