1.   However, isolated, high elevation showers may develop as the mountain peaks act as a source of heat to buoy rising currents of air.

2.   Meanwhile, snow will reach accumulations of more than a foot on Friday in parts of the central and southern Rockies with low elevation showers dampening the Arizona deserts.

3.   Scattered showers and higher elevation snow showers will also affect northwestern California and the Pacific Northwest.

4.   A few showers and higher elevation snow showers were seen across the mountains of Wyoming and Montana.