A single Windflare consisted of a massive, violently rotating vortex of air that formed rapidly and with little warning. Within the vortex, large amounts of electricity built up until it was discharged in the form of lightning bolts or continuous, roving arcs. Windflares were highly dangerous as the wind speeds they produced were high enough to fling boats and break apart wooden structures, and the electrical strikes were powerful enough to take out chunks of brick buildings and vaporize people. Windflares had four different categories.