Dramatic footage has emerged of a funnel cloud forming over Hamburg, Germany, during a strong storm near the city.

The video, filmed this week, shows what appears to be a tornado swirling over a house.

According to local media, the storm caused roofs to fly off houses and flooded some basements.

Meteorologists have not yet declared whether the storm was in fact a tornado.

Tornado over Hamburg / Germany. 16/06/07

Hamburg fire services on Tuesday declared a state of emergency due to the severe storm - believed to be a tornado - and have dispatched more than half of the available fire service workers in Hamburg.
"There are countless roofs that have flown off and flooded basements. More than 1,000 firefighters and technical helpers are on duty," said a fire department spokesperson. Residents reported seeing rain, then hailstones as big as table tennis balls, then suddenly a tornado on Tuesday evening in eastern Hamburg.