Yes. Tornadoes are not uncommon in Illinois.
Tornadoes most often form on land, but they can form over water.
There were 73 tornadoes in Illinois in 2011.
There were 123 tornadoes in Illinois in 2006.
Tornadoes most often form in association with cold fronts.
There were 52 tornadoes in Illinois in 2009.
The average number of tornadoes in Illinois are 27
Yes, tornadoes are a serious threat to Illinois. Violent tornadoes (EF4 or stronger) are a farily regular occurence in Illinois. These are the tornadoes that are known for devastating communities.
Virginia averages 6 tornadoes per year.
There were 49 recorded tornadoes in Illinois in 2008.
There were 55 confirmed tornadoes in Illinois in 2000.
There were 48 recorded tornadoes in Illinois in 2010.