Fire burns out of control at Melbourne tip

Firefighters are battling an out-of-control blaze at the Bulla tip in Melbourne's outer north. (AAP)

A fire is burning out of control at the Bulla tip in Melbourne's outer north.

There is dense smoke in the area and 13 Country Fire Authority trucks are battling the blaze.

The CFA on Tuesday morning advised residents to avoid the area, while anyone who is sensitive to smoke should close windows and doors.

But the fire does not pose a threat to the community.