im confused

Bitt was making the point that the storm front appeared to be making a nice circular path to avoid the center of the radar dish's sweep, which happened to be Raleigh. He was saying that the radar picture was funny because it looked like the storm was avoiding Raleigh.

I suggested that piled-up snow around the base of the radar might account for the visual anomoly, but a much more likely and logical explanation of low ground angle was offered.