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Huge rolling ‘cloud tsunami’ spotted over Bondi Beach as powerful storm

A day after a series of storms battered Victoria, a fearsome-looking weather system was seen hanging over Bondi Beach in the Australian city and slowly rolling across the sky.

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The storm itself has so far caused no serious disruption, but it came as forecasters warned those on the country’s east coast to expect flooding and hail this weekend.

Crowds gathered to watch huge storm clouds – dubbed on social media as a “cloud tsunami” – form near Bondi on Friday. “Generally, with severe storms, often flash flooding is actually the real killer – not so much the tornadoes or massive hail”.

The Bureau of Meteorology has issued a severe thunderstorm warning for regions including the Sydney metropolitan, Hunter and the Illawarra.

People were told to stay away from power lines, trees and drains.

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Mona Vale on Sydney’s northern beaches copped the heaviest falls, with 27mm of rain over the three-hour spell, Nabi said. A shelf cloud is usually associated with the leading edge of thunderstorm outflow; roll clouds are usually formed by outflows of cold air from sea breezes or cold fronts in the absence of thunderstorms.

Shelf clouds