The weather bureau has issued a severe weather warning for damaging surf for the north-east and east coast, with waves as high as 8 metres.
SES regional officer Michael D'Alton said beaches would be treacherous."It's unprecedented wave heights, so what we're asking people to do is actually stay away from the seaside areas, the oceans, beaches because the oceans will be unpredictable," he said.
Police and locals are searching for a man in his 80s who disappeared at the Cluny's Road area at Ouse, in the upper Derwent Valley.
His wife raised the alarm after he went to check part of their property. Police have sent a specialist search and rescue team to the area along with a helicopter.
A flood watch is in place for all Tasmanian river basins after parts of the state received rainfall in excess of 200 millimetres.
Bureau of Meteorology forecaster John Bally said the unprecedented conditions meant some rivers would not subside for days."We've got four rivers, that's the Mersey, the Meander, the Forth, and the North Esk that are at or forecast soon to be the highest flows that we've ever seen," he said.
Ouse sheep farmer Bernard Brain said he lost hundreds of yearling sheep, known as hoggets, in the floodwaters.
An expert claims that single men are depending on chatbots and virtual assistants to engage in "dirty talk." Ilya Eckstein, CEO of Robin Labs, said that his company's own virtual assistant is now being used by people many times every day for the type of conversations, which they should not be having with a machine.
Teenagers and truckers, in particular, talk to Robin 300 times every day because they are lonely and bored, he added.
Heavy rain and damaging winds are expected to continue across the north of the state today.
Authorities have urged people not to attempt to walk or drive through floodwaters.