Australia's east coast is about to be hit with a multi-day rain event with forecasters warning flooding is "likely" as powerful winds and surf batter the coast.
The wet weather event is being caused by a deepening low pressure system, and could last for as long as eight-days, Weathezone said.
A 2800 km stretch of the country - from Bateman's Bay in southern NSW, to Cooktown in Far North Queensland - is on alert.
The weather service says "accumulated rainfall totals of 100 to 200mm are likely in some parts of this region, with isolated falls above 300mm possible."
Modelling suggests up to 100ml could fall in 24 hours in some parts of coastal NSW.
Three flood warnings are already in effect for the state, with Queensland also bracing for "unseasonable" rainfall.
The heavy rain will start on Friday before intensifying on Saturday, Weatherzone said.
"On Saturday, a low pressure trough will deepen near Australia's east coast, causing rain to increase over parts of eastern NSW and QLD."
"Rain should continue over eastern QLD and large areas of eastern and central NSW on Sunday.
"Heavy rain is expected to fall over the southern or central coastal districts in NSW as a low pressure system deepens in the Tasman Sea, possibly delivering more than 100mm of rain to a similar region to Saturday."
The location and strength of the Tasman low becomes "uncertain from Monday".
The location and strength of the Tasman low becomes "uncertain from Monday".
"The focus of heavy rain could be anywhere between the southern and northern coasts in NSW, with some showers also likely to extend west of the ranges."
The low pressure system will also generate strong winds, potentially damaging winds" along the NSW coast and ranges from the weekend.
"These winds may prompt warnings on land and over water, and will also generate big waves in the coastal zone," Weatherzone said.
Let's look at what is happening around the country today.
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Brisbane
A "shower of two" is forecast for Queensland's capital as temperatures range between 12C to 21C.
Sydney
It will be mostly cloudy in the Harbour City with a low of 9C and a maximum of 19C forecast.
Canberra
Another chilly start for the nation's capital today, a low of 1C is forecast. The mercury will reach a top temperature of 13C.
It will be a cloudy day.
Melbourne
A partly cloudy day is ahead for Melbourne. A low of 5C and a high of 13C is forecast.
Hobart
A possible early shower will fall over Hobart this morning. A low of 6C and a high of 11C is forecast.
Adelaide
Back across the Tasman, showers are easing in Adelaide.
A 9C morning will give way to a 15C day.
Darwin
Morning and afternoon showers are likely in Darwin today as temperatures range between 19C to 25C.
Perth
And it will be sunny in Perth. A low of 6C and a high of 19C is forecast.
