What type of fronts are associated with tornadoes?
Tornadoes form in areas where both thunderstorms are present and wind speeds and directions change with height. You do not necessarily have to have a front present for a tornado to occur, however frontal boundaries often increase the amount of lifting to help develop thunderstorms and can serve to increase changes in with direction with height, all of which can increase the threat of tornadoes. The main type of front that increases the risk of tornadoes is called a dry line. Cold fronts and sometimes warm fronts can increase tornado risks and occasionally a sea-breeze front can cause a slight increase in tornado potential over a small, localized area.
