If you see one of these clouds in your city then get out first 

if you look up at the sky and see a cloud shaped like a skull then this is a bad sign

This happened in Italy in 2018 mount Vesuvius had a gigantic skull cloud form above it 

Mount Vesuvius is the volcano that wiped out the city of Pompeii

it looked very similar to Voldemort's cloud in Harry Potter 

People immediately began fleeing the city expecting the volcano to erupt 

Another scary thing to watch out for in the sky is ball lightning

This is a very rare kind of lightning that happens all over the world.

Ball lightning is much more dangerous than normal lightning 

These can sometimes explode sending lightning bolts everywhere there they can be as small as a soccer ball or as large as a house.