The cloud that this Thunderstorm happens in is a cumulonimbus cloud.This cloud is shaped like an anvil.
A lot of warnings are on the news saying severe Thunderstorms.This means stay inside and be ready for power outages.
Most Thunderstorm clouds form over advancing air masses.Like the city, cities have big lightning strikes because tall buildings and advancing air masses.
Super cell's are basically tornado's.Tornado's are smaller than the Cumulonimbus cloud.
Thunderstorm sept 2 2013