Usually, tornadoes in the U.S. rotate counterclockwise. Coriolis force, imparted due to the Earth’s rotation, causes air around low centers to circulate counterclockwise in the northern hemisphere.

Winds always rotate in a counterclockwise sense around hurricanes in the Northern Hemisphere. Winds in tornadoes usually rotate counterclockwise, but in perhaps five percent of tornadoes, clockwise ...

Severe weather spotters are instructed to look for rotation in suspected funnel clouds and tornadoes, but I recently saw a video of funnel clouds with no rotation developing toward the ground. Is ...