Sleet is less prevalent than freezing rain and is
defined as frozen raindrops that bounce on impact with the ground or
other objects. The diagram shows a typical temperature profile for sleet
indicating the atmosphere's temperature at any given altitude. The
vertical line in the center of the diagram is the freezing line.
Temperatures to the left of this line are below freezing, while
temperatures to the right are above freezing.
Snowflakes are simply aggregates of ice crystals
that collect to each other as they fall toward the surface.