Hell I live in Anchorage and have for 40 + years and have never seen the 600 inches of snow your talking about. The average snow fall here is 76" per year and that doesn't stay around. BTW in Anchorage you can get a ticket for Ice and snow on your car.
Come visit me in Valdez, If there isn't enough snow for you here, we'll take a little ride up to Thompson pass.