Fall streaks occur in Cirrus clouds that make the clouds
look as if someone pulled the bottom of the cloud down while the top looks
solid. This formation is caused by ice
crystals that fall and eventually evaporated before hitting the ground.
I observed these fall streaks on Wednesday (March 6, 2013) while heading to
school.
Wind direction and speed, as well as how fast the ice
crystals fall will determine the shapes, sizes and how “wispy” these clouds
will look.
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