Complex sentence: On June 16,2013, at about 7:30 p.m. a landslide occurred near Kedarnath Temple with loud peal of thunder and huge amount of waters started gushing from Chorabari Tal or Gandhi Tal down Mandakini river at about 8:30 p.m. washing everything away in its path.
Split into simpler sentences: On June 16,2013, at about 7:30 p.m. a landslide occurred near Kedarnath Temple with loud peal of thunder. An enormously loud peal was heard and huge amount of waters started gushing from Chorabari Tal or Gandhi Tal down Mandakini river at about 8:30 p.m. washing everything away in its path.