The funnel clouds formed by tornadoes can reach up to 2,000 feet (610 meters) across at the narrow end.
Since they form from cloud bases, theoretically they can be up to 6,500 feet (1,981 meters) tall, though we don’t really have any way of measuring them.
The winds inside funnels reach as high as 370 miles (592 kilometers) per hour.
We see the swirling winds of a tornado because the wind picks up dust and debris. When a tornado occurs over water, it picks up water and forms a waterspout. Tornadoes produce the strongest winds found on Earth.