Wild weather is expected to continue through the weekend, with ongoing thunderstorms on the east coast and a tropical cyclone developing just off the coast of Western Australia.

Footage shows a dramatic lightning storm seen above Sydney in New South Wales, Australia, as at least one person was killed in the storm. Officials said that an unstable airmass combined with an upper trough produced wild weather across large swathes of the state late Wednesday.

A huge line of storms crossed New South Wales overnight, causing power outages, flash flooding and almost 2 million lightning strikes.

Sydney and other parts of New South Wales were hit by fast moving storm, with thunder, lightning, heavy rains and winds that left some suburbs blacked out. This footage illustrates severe thunderstorm with lightning flashes,

Footage shows a dramatic lightning storm above the Sydney Olympic Park in New South Wales, Australia, as at least one person was killed in the storm. Officials said that an unstable airmass combined with an upper trough produced wild weather across large swathes of the state late Wednesday.