Many were also without running water because electricity was cut to pumping stations.
More than 50,000 households were without power in Bosnia and more than 30,000 in Serbia.
In Montenegro, snow and strong winds prompted authorities on Friday to issue a blizzard warning for mountainous regions. A number of roads were closed for traffic.
Rescuers evacuated more than 40 people stranded in deep snow in mountains near the Montenegrin towns of Niksic and Savnik, and dozens of motorists in southwest Bosnia were also stranded
Thanks to George Martinez for this link