I went to that site and found this - humor is well needed right about now. :o)
M0 Tornado - Cows in an open field are spun around parallel to the wind flow and become mildly annoyed.
M1 Tornado - Cows are tipped over and can't get up.
M2 Tornado - Cows begin rolling with the wind.
M3 Tornado - Cows tumble and bounce.
M4 Tornado - Cows are airborne.
M5 Tornado - STEAK!