|Quoting CF-CPI (Reply 7):|
I had never heard of a horizontal tornado -perhaps someone with meteorology experience could elucidate?
Well, I've never heard of a horizontal tornado occuring naturally in nature, but if you think about it, wake turbulence is like a horizontal tornado. It is a column of spinning air starting out at a point whose circumference gets wider as it gets taller (or longer, in this case).
I would imagine most horizontal tornados (including wake turbulence) are invisible, because as they do not touch the ground, there is no spinning cloud of dust and debris.
However, a naturally occuring horizontal spiraling column of wind and wake turbulence could never actually be called a tornado, as neither actually touches the ground.