3-6 lines..How are tornadoes formed?

Question

Very simple. Don't make it sound cheesy. 3-6 lines.

Answer 1

A good question. What you are basically asking is the meteorological conditions under which these storms may form. As an Air Force meteorologist for many years I use to watch the forecasters who specialized in this kind of forecasting in Omaha, Nebraska as they worked. What they looked for was a region where warm, moist, unstable surface air coming from the south coincided with drier, stronger, westerly air overlaying it. The other thing they looked for would be the possibility of thunderstorm development or movement of thunderstorms into that same region. Where these two met and the wind shear from near the surface to cloud level was such as to cause a cyclonic circulation a tornado vortex was likely to be generated.