Came close to a couple in Okeechobee, Florida, just on the northern tip of the lake. The first was little more than a dust devil. I was pulling weeds in my mother's rose garden and flnging them behind me. When I turned around to collect them and put them in the wheelbarrow, they were hanging in the air, swirling. It was silent, about six feet high, and carried them into the cow pasture beyond our fence before dissipating. One of the strangest things I've ever seen.