It looks more like rain, I see them every now and then here in Texas, the clouds would be alot darker too. You don't have to worry about, it can be a bit confusing from a distance. Unless it was under very dark clouds, visibly rotating, or if it was part of a Super Cell, I wouldn't be too concerned.
DoctorEggman
You mild mannered Beast!
What do you think your doing!?
Chdonga
You random posting buffoon!
What are you talking about?