So, while a green sky doesn't always mean a tornado is coming, it is a sign that you should take cover from an approaching thunderstorm. Advertisement. About Our Ads; Advertisement.

MOLINE, Ill. — Tuesday night, July 5, a derecho made its way through Iowa. Before the derecho reached the Quad Cities area, it traveled through South Dakota. There, it created a green ...

A News5 viewer recently reached out asking us about what turns the sky green ahead of a thunderstorm. If you've do see a ...

Anyone who has lived in Tornado Alley or other areas with high rates of severe weather has probably experienced the phenomenon of a green sky. It can be unsettling to the untrained eye to see the ...