Based on U.S. statistics about 2% of tornadoes cause deaths which works out to about 25 killer tornadoes in an average year.
On average, tornadoes cause around 70-80 fatalities and 1,500 injuries each year in the United States. However, the number can vary widely depending on the intensity and frequency of tornadoes in a given year.
On average tornadoes cause 60 deaths and 1,500 injuries each year.
Annually in the U.S. tornadoes kill about 60 people and injure about 1,000.
Most of the deaths and injuries and some of the damage in tornadoes is due to flying debris.
On average tornadoes cause 60 deaths and and about $500 million dollars in damage each year.
There were no deaths or injuries from the tornadoes of April 11, 2012. Both of the tornadoes in Texas on that date were rated EF0 and such tornadoes hardly ever kill.
Based on data from the past 30 years 56 people are killed and about 1000 injured in an average year in the U.S. It varies widely from year to year, however.
Countless thousands. It is doubtful that data is kept on this. Most tornadoes are weak and rarely cause deaths or injuries even when they damage property. Looking at data from some of the worst tornadoes, such as the Joplin tornado, the number of homes damage or destroyed is far greater than the number killed or injured.
Worldwide injury statistics are not available, but tornadoes in 2012 killed 113 people worldwide. In the United states tornadoes killed 70 people and injured more than 800.
In 2011 there were 1,626 tornadoes and 552 deaths.
Tornadoes caused 44 deaths in the U.S. in 2010 and an unknown number worldwide.
It varies dependong on the strength and size of the tornado and where and when it hits. Most tornadoes do not cause any injuries because they are weak or do not hit a densely populated area. Most that do injure people do not cause more than a handful of injuries. However, some tornadoes will cause dozens, even hundreds of injuries. In the years 1991-2013 there were more than 28,000 tornadoes in the U.S., of which 249 caused 100 or more injuries. Of those, two injured more than 1,000 people each.