A firefighter died during a flood rescue in Austria and one person drowned in Poland, as torrential rain caused by Storm Boris continued to wreak havoc across Central and Eastern Europe, the BBC reports.
In Romania, five people have died, while several remain unaccounted for in the Czech Republic.
The Austrian province surrounding Vienna has been declared a disaster area, with its leaders speaking of “an unprecedented extreme situation”.
Poland’s prime minister Donald Tusk declared a state of natural disaster.
Some of the worst rainfall has been in the Czech Republic, where some areas have seen around three months’ rainfall in just three days.
Evacuations are under way and four people remain missing – three in a car which disappeared into a river in North Moravia, and one man who was swept into a flooded stream in South Moravia.