It did just that.
By the time Connor and I left for the dump and post office, Janelle's tracks from leaving for work were already filled in. In just the five minutes we were parked at the dump, Mera was completely coated. After the hour and half that we were at the post office (during which time I sang a series of Christmas carols without repeating a song--yep, I was THAT guy), we had to brush off over an inch of snow. As I pulled into the driveway, I noticed that our earlier tracks from leaving had been filled in. By the time the snow finally stopped and topped the five inch mark, even our return tracks were filled.
Let me just say, I am so glad I have my ATV (whom I have decided to name Scarlet) with its plow this year. All told, our driveway was cleared after an hour and a half. Not only does my back not bother me, but I had a blast clearing the snow--while having "Winter Wonderland" running through my head (as I had sung it earlier).