Chicago, USA: NIGHT SPEEDED UP TIME LAPSE SEQ showing electrical storm with forked lightning over Chicago skyline

White ambulance driving towards camera down street and trees blowing in violent wind and heavy rain during Hurricane Wilma in Mexico

Night time. Several flashes of lightning silhouetting tree in foreground.

Dramatic night view of violent waves crashing against sea wall as car passes behind

Oklahoma, USA: A powerful tornado tearing through a field with dirt spiralling around the tornado column.

Sequence of shots showing a tornado swirling and spiralling across the sea, stirring up water off Limasol in Greece

Texas, USA: A large tornado forming with lots of dust swirling ominously between the tornado cloud and ground.

Texas, USA: Black tornado clouds gathering in pink sky, a tornado vortice gathers and disappears.

Sequence of shots showing 'Stop' traffic sign blowing in wind and roof of motel balcony being blown down during Hurricane Georges in Florida, America.

Manitoba, Canada: A large black tornado column fiercely rotating over a field.

Chicago, USA: Wide shot of the Chicago skyline at night with thunder and lightning visible.

Kansas, USA: A white tornado column reaching to the ground. Camera zooms in as the tornado hits a dwelling behind trees and debris flies violently in the rotating air.

Travelling point-of-view shot from interior of car driving along tree-lined road during violent wind and rain of Hurricane Ivan in Jamaica, windscreen wipers move across window then tree branch falls onto glass and cracks windshield

Manitoba, Canada: A massive black tornado column rotating over a field with dust and debris swirling in the powerful winds.

Manitoba, Canada: A large tornado with dark clouds rotating powerfully.

Manitoba, Canada: Zoom in toward a massive black tornado. Huge swirl of dust and air rotates over a field ominously.

Commuters walking towards camera along bridge in London holding up black umbrellas against heavy rain and wind, the most prominent person is a businessman wearing a dark suit and tie

Whitby, England, United Kingdom: Long shot of a stormy grey sea with foam covered waves in the distance and seafront walkway in the foreground. The camera pulls out to show the Whitby Whale Bone Arch sculpture.

Manitoba, Canada: A huge black tornado cloud over field, the camera zooms in to show the tornado's three vortices fiercely swirling on the field.

Manitoba, Canada: A massive black tornado column over a field with debris flying in the wind.

Airview over Beachy Head showing red and white lighthouse and collapsed chalk cliff near to lighthouse surrounded by white waves on sea

Manitoba, Canada: A huge black tornado with three vortices swirling. The vortices join into one huge tornado and then split into separate vortices again.

Oklahoma, USA: A huge tornado with a large debris cloud swirling around it seen from a reversing car.

Oklahoma, USA: A fierce tornado tearing through a field lifting up debris and vegetation which swirls around the column of the tornado.

Manitoba, Canada: A massive black tornado column fiercely rotating over a field.

Manitoba, Canada: A massive black tornado swirling over a field with rain and hail falling.

Sequence of shots showing flooded street with traffic signs, signals and trees blowing in violent wind caused by Hurricane Wilma in Florida, America.

Manitoba, Canada: Zoom towards a huge black tornado which has several vortices.

Kansas, USA: A tornado cloud fiercely rotating dust high above ground with debris flying in air. Camera zooms out to show the tornado as it tears through countryside.

Kansas, USA: A white tornado column ripping through countryside.