Millions of Aussies are bracing for rain deluges of up to 400mm and gusts of 125kmh as the terrifying path of Cyclone Alfred is revealed.

Blake Antrobus, Zoe De Koning, Duncan Evans and Clareese Packer

A cyclone watch has been issued for the first time since 1990 in NSW, as residents are warned Tropical Cyclone Alfred could bring “damaging” wind, waves and the potential for “intense” rainfall.

The Bureau of Meteorology (BOM) has forecast the category 1 system will likely increase to category 2. It could bring “damaging to destructive winds” strong enough to bring down trees, as well as heavy to intense rainfall and possible flash flooding, to swathes of the NSW and Queensland coasts from Wednesday.

In their latest update, the bureau has forecasted the rain and wind will increase and build over Wednesday, continuing into Thursday.

The peak of the system will hit early on Friday – when Alfred makes landfall – and possibly continue into Saturday.

It’s currently hundreds of kilometres out to sea but during Tuesday is expected to take a swerve towards Australia heading between Brisbane and the Sunshine Cast with affected areas including Byron Bay and the Gold Coast.

But, the BOM has cautioned, the cyclone’s track could change and anywhere between Sandy Cape in Queensland and Grafton in New South Wales is at risk.

The strength of Tropical Cyclone Alfred is forecasted to peak by Friday, according to the Bureau of Meteorology's latest update. Picture: BOM