15 July 2012 Last updated at 18:09 ET

Poland: Tornadoes hit Kujawy-Pomorze and Wielkopolska

The BBC's Adam Easton in Warsaw says there are reports one tornado was 1km wide

One person has been killed and at least 10 others injured during a series of freak tornadoes in northern and western Poland.

The extreme winds hits the country's Kujawy-Pomorze and Wielkopolska provinces, destroying 100 homes.

Some 400 hectares of trees have also been damaged in Bory Tucholskie forest, a national park and popular tourist destination.

Electricity power-lines have also been damaged.

The BBC's Adam Easton, in Warsaw, says that though tornadoes are not unknown in Poland, this summer's series of events has been particularly dramatic and weather forecasters have predicted stormy conditions will continue.

According to local media reports, a 60-year-old man who was killed died in the village of Wycinki after being crushed beneath his collapsing house.

Residents have described hearing a terrifying rumble as the tornado approached.

A vast clean-up operation is now under way as people hastily cover up their roofs, fallen trees are removed and power lines are repaired.