Tornado features:
Tornadoes occur usually during daytime, from mid-afternoon till about early evening. Their movement is usually from the southwest to the northeast. Sometimes they move in any direction, and in the general path of the thunderstorm. The spinning winds cover an area of about 300 — 400 yards, and can travel on a path for about 5 miles (some tornadoes travel for over 80 miles), at a speed of about 5 — 60mph.
Sometimes tornadoes develop in a very short time frame, leaving very little lead time for warning and preparation.