The security department in Lower Austria province said Sunday that a 50-year-old local resident died in a hospital after the accident in Poechlarn, west of Vienna.
The incident happened late Saturday afternoon when a storm and heavy winds hit the town during a medieval-themed festival in a park. Authorities say the limb of an old tree crashed into tents that organizers had set up below it.
Thirteen people were injured, including the man who later died. Firefighters had to use power saws to free people from the tents.