abstract background clouds dangerous grey heavy nature thunderstorm weather flash lightning thunder thunderbolt backlight black and white rain storm sunset field thunderhead tornado beam of light blue cloud landscape light red sunrise wind dark dark clouds HDR sky summerstorm autumn countryside England english fall farm Great Britain hedge rural Sussex autumn storm bolt electrical storm levin magnetic storm tempest beach black electric Lightening night sea waves berlin cumulus frohnau horizon meadow Natural landscape plain plant road Stolper Feld