|Hurricanes are one of nature's most powerful storms. There are wind speeds up to 74-200 miles per hour. In a three year span, the U.S. coast line is hit five times by hurricanes, two of which will be designated as major hurricanes. Hurricanes and tropical storms may produce tornadoes. Inland areas away from the coastline can experience destructive winds, tornadoes and floods from tropical storms and hurricanes. Hurricanes are enormous. Each one is about ten miles high and 300-600 miles wide. Some hurricanes move over an ocean and never reach a seacoast. But some hurricanes move from the ocean toward the seacoast. A typical hurricane has a life span of about 10 days. Hurricanes are powered by the heat of the sea. When hurricanes become very strong, they can create their own steering winds.