It's worth noting that while no single tornado has ever been as costly as the disasters listed here, scientists estimate that 2011 could see some of the most powerful tornadoes ever recorded. (insuranceproviders.com)
It seems the number of powerful tornadoes hitting the country may be on the increase. (newscientist.com)
As a result, even nature's most powerful tornado would pass through town without any loss of life. (scientificamerican.com)