Names of types of Lighting techniques in ART - the special light formed from an approaching storm?

Question

What is the type of lighting technique artists use to create that feel of an approaching storm, when the skies are blue-black and the highlights are quite white...
Here are paintings to help explain what I mean-
http://www.clevelandart.org/educef/sisterwendy/html/1733556.html
http://www.mgorenstein.com/rollingt.htm

Thanks

Answer 1

The lighting has a name but not specifically for "storm light".
Just take a look at these:
http://www.adolphus.nl/xus/simeon/willink.jpg
http://en.wikipedia.org/wiki/Image:Rembrandt_Harmensz._van_Rijn_097.jpg
http://en.wikipedia.org/wiki/Image:Baglione.jpg

It is called:
Chiaroscuro

http://en.wikipedia.org/wiki/Chiaroscuro