How do storms start?

Question

how do storms begin, i know that it is like from evaporation that the clouds form n stuff but fronts and like cold weather?

got asked this today and i couldnt give a straight answer.

Answer 1

thunderstorms form when cold air and warm air collide and the cold air pushes the warm air up. as the warm air rises, it cools. the moist water vapour begins to condense. when the moisture condenses, this releases energy that keeps the air warmer than its surroundings, so that it continues to rise. if enough instability is present in the atmosphere, this process will continue long enough for cumulonimbus clouds to form, which support lightning and thunder.  

heres some sites

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

http://www.weatherstreet.com/How_Thunder...

hope this helps!