Well Gumby couldn't wait to get out there with the ruler. When we woke up this morning. It was obvious we would be using the yard stick instead. We measured just under 12" but this was on top of my car and lost a couple inches with wind. These dogs didn't want to play. Out and back. The "sponge ball" I have on my car antena was almost totally enveloped in snow. That's a lot of snow.