Snow is slated to fall on western Nevada County Thursday, as the mercury will continue to descend throughout the week into the weekend, weather officials said Monday. Around noon Thursday, snow will begin to accumulate at elevations of 2,000 feet and above according to Johnnie Powell, meteorologist with the National Weather Service. Accumulation is not expected to be significant as the snow will turn to rain overnight into Friday in much of the lower lying areas of the Sierra foothills, Powell said. Regardless of the form, precipitation will continue to fall on the region through the weekend and up until …