'Chaos': Holidaygoers trapped in surging flash flood open up on moment 'tsunami' hit Victorian tourist hotspot

Two holidaygoers caught in yesterday's "tsunami" flash flood in Victoria have spoken of the "chaos" that erupted as surging waters rose.

At least one person had to be rescued from a roof yesterday and multiple cars were swept away in Wye River, Kennett River, Cumberland River and Lorne.

Several waterways burst their banks at the popular Victorian holiday spot following a deluge of 180mm of rain in less than five hours.

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"It was a pretty crazy sight," holidaygoer Darren Schonewille told Today this morning.

"Just to see how, like, quick the water rose, and the chaos."

He said the flood had come up suddenly.

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"We were a little bit trapped, I guess, in terms of we were at the front of the and so it was quite hard to get in and help anyone out," fellow holidaygoer Matthew Clark said.

"Seeing those cars float out and then trying to get around those people who lost belongings pretty quickly, it was pretty traumatic for the people."

The Great Ocean Road remains closed in both directions between Lorne and Skenes Creek due to the flooding and the fear of possible landslides.

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Coach services are taking detours, while drivers are urged to detour using the Princes Highway via Colac.

"Transport Victoria reminds the community of the extreme danger of travelling in the current conditions," Transport Victoria said in a notice.

"Roads may be closed and public transport routes may be cancelled at short notice."

Vic Emergency's latest update, posted at midnight, said the threat of immediate flash flooding had passed.

"Dangerous hazards including floodwater, mud, debris, damaged roads and fallen trees are still be present," the update read.

Emergency relief centres have opened at Lorne Stribling Reserve, 45 Otway Street, Lorne; and at Apollo Bay P12 College, Pengilley Avenue, Apollo Bay.

The Bureau of Meteorology has cancelled two severe weather warnings for Victoria, and no new ones are in place.

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