It depends on what exactly you consider big. The average tornado is about 50 yards (45 meters) wide and several thousand feet tall. Very small tornadoes, though may be under 10 yards wide, though must still extend from ground to cloud base (usually at least 1000 feet or 300m up). The largest tornadoes can be over a mile (1.6km) wide and up to 20,000 feet (6000m) tall.
If they were little they wouldn't be tornadoes
Big tornadoes are usually strong, but not always. A large, poorly organized tornado is not likely to be very strong. Some tornadoes even weaken as they expand.
Most tornadoes are 50 to 100 yards wide.
Yes, tornadoes can strike big cities. While less common than in rural areas, tornadoes have been known to hit major cities like Oklahoma City and Dallas. Urban areas may experience less frequent tornadoes due to the presence of buildings and infrastructure, but they are not immune to tornado activity.
Yes, tornadoes can happen almost anywhere that there are thunderstorms.
All 50 states get tornadoes though they are rare in many of the states.
Yes. Some twisters have touched down and joined together to create a big tornado.edit: when tornadoes form like that its called a multivotex tornado
It depends on what you mean by extreme. Tornadoes of EF4 and EF5 tornadoes, however are often referred to as violent tornadoes. These account for about 1% of all tornadoes.
Generally, small tornadoes do less damage than large ones, but some small tornadoes have been very destructive.
Tornadoes happen all around the world and it depend on your location as to how many tornadoes you will have.
Tornadoes can vary in size, with most being between 100 to 600 meters wide. However, there have been larger ones that exceed 2 km in diameter and smaller ones known as rope tornadoes that are thin and narrow.
I believe coming out of a La Nina as we are is conducive to an enhanced threat of tornadoes. Aside from that, it's just one of those things where all the conditions have come together perfectly for a couple big outbreaks.