Breathtaking!...."I looked, and I saw a windstorm coming out of the north - an immense cloud with flashing lightning and surrounded by a brilliant light. The center of the fire looked like glowing metal."Ez1:4
Shakespeare includes the theme of weather (especially thunder) to show that something bad is happening, and to paint a gloomy and dark setting for the audience. Also, the thunder is only described right before Macbeth goes to meet the witches, which represents that the witches are doing evil and unnatural things that go against the norm. Similar to how thunder goes against the normal sunshine and happy weather.
Catatumbo Lightning - At the point where the Catatumbo River meets Lake Maracaibo in Venezuela, a constant lightning storm illuminates the sky for around 10 hours a night, for almost half the nights out of the year.
In Chile, A Lightning Storm Breaks Out Above An Erupting Volcano
The Cordón Caulle volcano in central Chile is pictured in all it's glory by Chilean photographer Francisco Negroni. His stunning snaps show forks of volcanic lightning to create an incredible light show.