A slow-rolling series of storms that battered the American West this week brought snowfall and high wind on Thursday to parts of California, where weather-weary residents have already endured lashing rain, heavy snowfall and a destructive tornado. Since the wild weather began slogging ashore on Monday, five deaths in California and two in Colorado have been blamed on storms. On Thursday, up to a 1 foot (30 centimeters) of snow fell on Colorado mountains, and northern Nevada was expecting as much as 7 feet (2.13 meters) on top of the 2-3 feet (more than half a meter) that already had fallen. Conditions were improving on Thursday in Arizona, as water levels quickly fell in a Sedona-area creek that had fattened from a trickle into a river of mud, forcing a dozen neighborhoods to evacuate. Damage assessments were expected to begin on Thursday.